相关试卷
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1、____ in thought, he ran against a passer-by.A、Absorbed B、Absorbing C、Being absorbed D、To absorb
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2、The old lady from New York felt very happy when she was able to make herself ____ in her broken Chinese.A、understood B、to understand C、understanding D、understand
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3、 阅读下面短文,从每题所给的A、B、C和D四个选项中选出可以填入空白处的最佳选项。
When my grandmother was a teenager, her family moved to Transylvania. To make money, she began 1 in a bakery (面包店). For two or three years, she threw herself into 2 desserts and became an excellent baker. It was there that she met my grandfather, got 3 , and had two children: My mother and my uncle.
My grandparents treated us very well as kids, especially when it came to 4 . We often stayed with them on the weekends and as an excellent cook with a 5 tooth, my grandmother always made sure to serve dessert after every single meal. It became a 6 for her to make us a different dessert every Sunday. Of all the desserts, my sister Adriana and I 7 papanasi, a traditional Romanian dessert made of sweet cow cheese (奶酪), best.
After moving to Canada when I was a young girl, my family found it 8 to find a suitable cheese for the recipe (食谱) for papanasi. Back in Romania, there was always fresh cow cheese at the farmers market, and we could 9 buy this cheese. When I 10 my baking skills like my grandmother and finally found the 11 cheese, the recipe turned out just right. It was like I could see her clapping (鼓掌) and 12 in the room with me.
My grandmother passed away when I was 9. Over the years, baking has become my way of 13 her. Every time I make papanasi I 14 her.
Family recipes and the love within them are not limited to space and time. The years may pass, but through this recipe, we'll always 15 each other.
(1)A 、 working B 、 painting C 、 volunteering D 、 singing(2)A 、 ordering B 、 selling C 、 creating D 、 choosing(3)A 、 tired B 、 married C 、 paid D 、 dressed(4)A 、 training B 、 reading C 、 playing D 、 eating(5)A 、 sweet B 、 missing C 、 gold D 、 healthy(6)A 、 need B 、 mistake C 、 tradition D 、 shame(7)A 、 used B 、 explained C 、 knew D 、 liked(8)A 、 challenging B 、 interesting C 、 dangerous D 、 popular(9)A 、 secretly B 、 probably C 、 easily D 、 finally(10)A 、 perfected B 、 forgot C 、 considered D 、 doubted(11)A 、 cheap B 、 right C 、 old D 、 famous(12)A 、 sleeping B 、 cheering C 、 exercising D 、 cleaning(13)A 、 helping B 、 changing C 、 honoring D 、 guiding(14)A 、 depend on B 、 agree with C 、 wait for D 、 think of(15)A 、 hate B 、 have C 、 fight D 、 trust -
4、 根据下面短文,从短文后的选项中选出可以填入空白处的最佳选项。选项中有两项为多余选项。
No matter how many times you go, Dubai always has something new in store for its natives and tourists. Let's take a look at a few must-dos for your first time in this impressive city in the United Arab Emirates!
●Hit the famous Dubai Mall.
Any shopaholic (购物狂) worth their salt knows about the Dubai Mall, one of the most famous and the most expensive shopping centers in the world. However, even if you're not in the mood to spend your savings in hundreds of luxury stores, there are other fun options.
●Mind your manners.
While you're searching for the next adventure, make sure you follow some basic rules of conduct that the local law prescribes. For example, if you're travelling with your significant other, public displays of affection are strictly forbidden. So make sure that your attitude is appropriate for the city's expectations and cultural norms.
●.
Although you'll find many tourists wearing clothes considered not entirely polite by the locals, there are certain rules that are strictly implemented in restaurants, malls, and entertainment centers. So, if you put on something considered inappropriate or revealing, you risk being asked to leave a place.
●Save some time for Jumeirah Beach.
Situated conveniently close to Burj al Arab, this spectacular stretch of the coast is a perfect way to spend some time sunbathing and enjoying the warm waters of the Persian Gulf. In addition, those looking to stay away from the sun can enjoy the many bars next to the beach.
●Prepare your palate for Emirati food.
Have you ever had a chance to sample Al Machboos, camel meat, or Manousheh? Arabic cuisine has some of the most extraordinary delicacies you could possibly imagine, few of which are prepared in the same manner outside of their native lands. .
A. Jumeirah Beach is about 10 kilometres long.
B. Pay attention to your dressing requirements.
C. If you're travelling with kids, you'll find the beach perfect.
D. Home to around 1,300 stores, it is a wonderful shopping place.
E. Try the authentic Arabic coffee for a flavorful taste of the East.
F. Dubai is indeed a destination packed with adventure and culture.
G. Getting drunk or using offensive hand gestures are all illegal activities.
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5、阅读下面短文,从每题所给的A、B、C和D四个选项中选出最佳选项。
Our most commonly held code for success is broken. Conventional wisdom(普遍看法) holds that if we work hard we will be more successful, and if we are more successful, then we'll be happy. If we can just find that great job, win that next promotion, lose those five pounds, happiness will follow. But recent discoveries in the field of positive psychology have shown that this code is actually backward: Happiness fuels success, not the other way around. When we are positive, our brains become more engaged, creative, motivated, energetic, and productive at work. These discoveries have been repeatedly proved by rigid research in psychology and neuroscience (神经科学), management studies, and the bottom lines of organizations around the globe.
In The Happiness Advantage, Shawn Achor, who spent over a decade living, researching, and lecturing at Harvard University, draws on his own research—including one of the largest studies of happiness and potential at Harvard and others at companies like UBS to fix this broken code. Using stories and case studies from his work with CEOs of Fortune 500 in 42 countries, Achor explains how we can reprogram our brains to become more positive in order to gain a competitive ability at work.
Based on seven practical, actionable principles that have been tried and tested everywhere from classrooms to boardrooms, stretching from Argentina to Zimbabwe, he shows us how we can capitalize on The Happiness Advantage to improve our performance and maximize our potential.
A must-read for everyone trying to stand out in a world of increasing workloads and stress, The Happiness Advantage isn't only about how to become happier at work. It's about how to get the benefits of a happier and more positive mode of thinking to achieve the extraordinary in our work and in our lives.
(1)、What do we know about the new discoveries in Paragraph 1?A、Positive psychology is really backward. B、Happiness contributes greatly to success. C、Conventional code for success is totally useless. D、The more we are successful, the happier we are.(2)、Why did Shawn Achor write the book The Happiness Advantage?A、To study stories and cases of CEOs. B、To make lectures at Harvard University. C、To reprogram one's brain to be healthier. D、To make people more positive and competitive.(3)、The underlined phrase "capitalize on" in Paragraph 3 is closest in meaning to____.A、in search of B、stand out for C、make use of D、provide fund for(4)、What is the write's purpose of writing the passage?A、To strongly recommend the book. B、To help people stand out in the world. C、To arouse people's sense of happiness. D、To help people decrease the work stress -
6、阅读下面短文,从每题所给的A、B、C和D四个选项中选出最佳选项。
At the Winter Olympic Games in Sochi, Russia, halfway in the women's slalom(障碍滑雪)race, 18-year-old Mikaela Shiffrin took a commanding lead over the greatest women's slalom skiers in the world. On her final run, she burst from the start house at a breakneck speed, snaking around the poles in crazy rhythm.
Skiing has always been a significant part of Mikaela's life. Her mom raced and coached skiing and her dad ski raced all through college. The Shiffrins taught Mikaela and her brother, Taylor, to ski at a very young age. At the age of two and a half, Mikaela made her first ski run on plastic skis. From ages 8 to 11, she worked hard, practicing hundreds of training runs on small hills repeatedly to develop the correct techniques of slalom skiing.
When Mikaela was 11, she attended the Burke Mountain Academy, a Vermont boarding school for skiers. She took classes, studied, and practiced her skiing crazily. According to Kirk Dwyer, Burke Mountain Academy headmaster, "It was the degree of Mikaela's effort to be the best that distinguished her from others. Her commitment to conditioning, having proper sleep, eating correctly, doing the drills, and watching video was unusual for an 11 to 13-year-old. Mikaela practiced more than anyone and believed in herself then and now."
By the time she was 17, she had already won her first World Cup race.
Working hard is a full-time job for Mikaela. Even her off-season is work time. In the summer, when Mikaela is off the ski slopes and in the gym, her daily training consists of six to seven hours of weight lifting, swimming, and biking to improve her core strength and flexibility. She does all of this so that she can dash down slopes at speeds topping 50 miles per hour while cutting back and forth around gates with astonishing precision.
"If you have passion for your targets, whatever they are," she says, "the sky is the limit. Give it your all!"
(1)、What can we learn from paragraph 2?A、Mikaela came from a skiing family. B、Mikaela's mother taught her to ski first. C、Mikaela trained harder than her brother. D、Mikaela's father coached skiing in colleges.(2)、Why were headmaster Kirk Dwyer's words cited?A、To stress Mikaela was a crazy teenager. B、To show Mikaela's distinct personality. C、To praise the good students in his school. D、To highlight Mikaela's great devotion to training.(3)、Which of the following words can best describe Mikaela?A、Talented and wise. B、Creative and determined. C、Flexible and brave. D、Determined and self-disciplined.(4)、What does Mikaela Shiffrin's story convey?A、Practice makes perfect. B、Not to advance is to go back. C、He who laughs last laughs best. D、Actions speak louder than words. -
7、 阅读下面短文,从每题所给的A、B、C和D四个选项中选出最佳选项。
When places are well-known and popular--historical and modern alike-- we might take it for granted that they'll be around forever. But sadly, many of the world's best known and culturally significant landmarks are in trouble.
Mount Kilimanjaro's peak
This mountain,one of the Seven Summits, proves that even giants can fall to climate change due to the vast amounts of greenhouse gases in the atmosphere. While the mountain itself, located in Tanzania, isn't in danger at present, its iconic snow cap might disappear—and shockingly soon. Research found that the snow cap had lost 85% of the total area of its ice fields between 1912 and 2007, and the remaining ice could be history as early as 2030.
Machu Picchu
Located in southern Peru, Machu Picchu is the remains of a huge stone castle that was built during the 15th century. These unbelievable Incan ruins are widely considered one of the must-see spots in South America. However, the site has been a victim of over-tourism,seeing the harmful effects of the crowds it gets as they wear down the structures. In addition,the area surrounding Machu Picchu has seen rapid development of the cities, as well as mudslides and fires, in recent years, leading UNESCO to work for its protection.
Everglades National Park
This stunning Floridian wildlife reserve has sadly found itself fighting for its life in recent years. As the largest subtropical wilderness reserve in North America, according to UNESCO, it's been a beloved travel destination for American citizens for decades, but the damage of time and human activity have not been kind to it. Its survival first came into question after it was destroyed by Hurricane Andrew in 1993. But it's human influence that has become the primary threat, as water flow to the site has decreased and the impacts of pollution have increased, resulting in harmful algal blooms (赤潮). Its vast, diverse wildlife is more threatened than ever before.
(1)、Which problem does Mount Kilimanjaro face?A、Over-tourism B、Ice pollution. C、Global warming D、City development.(2)、What is threatened by human activity in Everglades National Park?A、Lack of popularity. B、Hurricane Andrew. C、Algal blooms. D、Diverse wildlife.(3)、What do these three places have in common?A、They are the impacts of pollution and mudslides. B、They are famous but affected by human activities. C、They are destroyed severely due to over-tourism. D、They are considered as victims of global warming. -
8、 现在请根据前面所听到信息,完成16-20小题的回答,每空不超过3个词。(1)、— How long has Tom been taking part in their club activities?
— For.
(2)、—What can new participants do in the club activities?—They can watch some .
(3)、Who inspired Tom to pay attention to climate change?--His .
(4)、—What fact did Tom's childhood environmental books mainly talk about?—There was an increasing threat to .
(5)、—What does Tom think is the best way to participate in climate change activities?—Devoting yourself to climate change.
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9、 请先根据中文提示将3个问句补充完整,然后听录音的回答,记录重要信息。录音回答播放两遍。
① 你是何时开始关注气候变化的?
did you paying attention to climate change?
② 你最初采取什么措施应对气候变化?
you originally do to handle climate change?
③ 青少年如何参与环保活动?
How can get involved in activities?
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10、 听对话,补全句子。录音仅读一遍。
Our club will have an on .
It is not a very meeting. We just share our about climate change.
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11、 听独白,回答问题。(1)、Why do sharks bite humans?A、They are cruel by nature. B、They want to protect themselves. C、They want to check if humans are food.
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12、 听独白,回答问题。(1)、Why should we hike with partners?A、To cut expenses. B、To ensure our safety. C、To make the trip more enjoyable.(2)、What is NOT needed when getting around in the park?A、A GPS. B、A map. C、A guidebook.
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13、 听独白,回答问题。(1)、What is the speaker's job probably?A、An actor. B、An educator. C、A businessman.(2)、Who is the speaker's organization for?A、Sick children. B、Poor children. C、Less lucky parents.
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14、 假定你是李华,请你写一封邮件给你的英国朋友Jim, 分享你近期参加的一项学校体育比赛活动。内容包括:
1. 比赛过程;
2. 赛后感受。
注意:
1. 词数100左右;
2. 短文的开头和结尾已为你写好。
Dear Jim,
How is everything going? I am writing to eagerly share my recent experience participating in a school sports event
Yours,
Li Hua
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15、 第一节 短文改错(共10小题,每小题1分,满分10分)
假定英语课上老师要求同桌之间交换修改作文,请你修改你同桌写的以下作文。文中共有10处语言错误,每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。
增加:在缺词处加一个漏字符号 (A),并在其下面写出该加的词。
删除:把多余的词用斜线(\)划掉。
修改:在错的词下划一横线,并在该词下面写出修改后的词。
注意:
1. 每处错误及其修改均仅限一词;
2. 只允许修改10处,多者(从第11处起)不计分。
Last month, my town hit by an unexpected flood. It rained heavily, turning streets into rivers or homes into islands in a flash. As the water risen alarmingly. panic set in between the residents. Unfortunately, because of our self-protection awareness and joint efforts from all sides, the flood didn't cause seriously damage. Shortly after that, the local government recommended tip on surviving in floods. It advised our to quickly move to a higher ground to avoid being drowned and to avoid contact with polluted water to reduce the risk of infection. Stay away from power sources to prevent electric shock was also on the list.
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16、阅读下面短文,在空白处填入1个适当的单词或括号内单词的正确形式。
Focused on guaranteeing the five major areas of organizing, participating, watching, (safe)and demonstration of the Winter Olympics, a key specialized project called "high-tech Winter Games" (lead) by the Ministry of Science and Technology back in 2017 was established.
Among 80 special research projects attached to the key project, 212 technologies were (eventual) applied, (provide)strong support for the"simple, safe and wonderful" 2022 Beijing Winter Olympics.
The visual technologies such as 8K stereo broadcasting system provide good visual experience for (that)watching the competitions on the screen. "Green"is also one of the themes for the "high-tech Winter Games": the torch is made of carbon-fiber materials is light and resistant to high temperatures, and (fuel) by hydrogen; the eco-friendly ice rinks use the world's (large)trans-critical CO2 direct cooling system which improves the energy efficiency more than 20 percent.
The hydrogen-powered buses employed in Yanqing and Zhangjiakou, and the biodegradable tableware being used at the Games also use the high technology.
Behind all the high technology in this Winter Olympics is a display of Beijing's scientific and technological innovation. Chinese people not only celebrate the athletes, celebrate the advances in technology that connect us and make our lives better.
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17、阅读下面短文,从短文后各题所给的A、B、C和D四个选项中,选出可以填入空白处的最佳选项。
The snow arrived earlier than predicted as I1 grocery bags into the Chevy's trunk and shut the hatch. Several feet of snow already covered our community, and this new2 was, of course, another cruel3 . "It'll probably be the disaster of this century, "I complained, thinking about the past few difficult years. Id4 the illness and the financial loss, but something else was5 me —the hopelessness that results from6 goals,
Usually a positive person of7 , I had always viewed life as a series of problems to8 .
Though I thought I'd handled the dilemmas well, I hadn't9 that the real me, the one whose passion for life had10 others, had burned out. In the past year, I had been faced with11 choices, and I'd made critical12 . Now I was afraid to trust my judgment and my future.
When nighttime arrived, I decided to take a walk. Outside, my feet seemed to be13 in the endless white as I walked along snowy fields toward the forest. Somewhere along my journey, I realized I'd been crying. Pausing to catch my breath, I felt a moment's14 I'd traveled off the recognizable path from my home. Tired and defeated, I fell and15 against a very strong trunk,16 my head on my drawn-up knees17 . A deer stood only a few inches away, locking her stare on mine. A few minutes passed, she stepped closer and lowered her head to18 my pocket as if to be in search of food. I felt my pocket and offered an apple to her gently.
"Mistakes can bring positive outcomes, after all. " Excited by my new19 , I moved ahead, growing tired but pressing onward. It's the20 and willingness to learn from the past and then press onward that can lead to a joyful future.
(1)A 、 placed B 、 poured C 、 hid D 、 hanged(2)A 、 jam B 、 kit C 、 storm D 、 suit(3)A 、 contest B 、 situation C 、 shortage D 、 strike(4)A 、 lived up to B 、 put down C 、 worked through D 、 looked out for(5)A 、 attracting B 、 disturbing C 、 delighting D 、 amazing(6)A 、 undecided B 、 unpublished C 、 unplanned D 、 unattained(7)A 、 freedom B 、 curiosity C 、 faith D 、 flexibility(8)A 、 solve B 、 seek C 、 avoid D 、 evaluate(9)A 、 acknowledged B 、 realized C 、 guaranteed D 、 proved(10)A 、 admired B 、 reminded C 、 warned D 、 inspired(11)A 、 unexpected B 、 unreliable C 、 untrue D 、 unrealistic.(12)A 、 mistakes B 、 comments C 、 words D 、 judgments(13)A 、 out of order B 、 out of shape C 、 out of danger D 、 out of sight(14)A 、 relief B 、 panic C 、 satisfaction D 、 dizziness(15)A 、 defended B 、 protested C 、 fought D 、 leant(16)A 、 resting B 、 seeing C 、 protecting D 、 tidying(17)A 、 secretly B 、 sensitively C 、 silently D 、 randomly(18)A 、 crash B 、 explore C 、 catch D 、 tear(19)A 、 decision B 、 departure C 、 thought D 、 ambition(20)A 、 promise B 、 wisdom C 、 stimulation D 、 shame -
18、 根据短文内容. 从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
So, you want to learn how to get the most out of your reading experience. Reading effectively is a piece of cake whether you're reading for school or fun. The following tricks will not only help you comprehend the information you're learning, but make the reading experience much more enjoyable.
Skim through the text.
Get a preview of what's to come by flipping through the pages. Once you have the basic idea of what you're reading, scan through the table of contents and headers or flick through the pages. Glance over any images, graphs, or illustrations. Take notes while you read.
Practice active reading by taking notes. Before grabbing your notebook, wait until you've finished reading or skimming through a complete section or idea. . Be sure to include the page number and source you're summarizing in your notes so that you can refer to the text later.
Think about what you've read.
. Once you reach the end of a main idea, section, or chapter, take a few moments to let everything soak in before you get back to reading. Identify the author's bias, assess the evidence, and observe your immediate reactions. Ask yourself whether you agree with the position that's being presented or the direction of the plot.
.
Link what you read to your existing knowledge or past experiences. Instead of treating the text as an isolated piece of writing, link it to previous readings. If a plot point reminded you of something from your own life, make a mental note of it. If you can connect the examples in the journal article with something you learned in class, jot down those similarities.
A. Make personal connections to the material
B. Set aside a few minutes to keep everything in mind
C. Pause between main ideas to process the reading material
D. Don't be afraid to question the text and make your own assumptions
E. Remember: trying to be as fast as possible is the first thing you should consider
F. Summarize the main idea in your head, and then write the main points and concepts
G. Take a few seconds to read the text quickly, including the notes, to spot eye-catching key words.
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19、 阅读下列短文. 从每题所给的 A、B、C 和 D 四个选项中. 选出最佳选项。
Spending all day glued to your smartphone probably isn't doing you any favors. Too much phone use has been linked with a range of concems, including sleep issues, joint pain and even relationship problems. But if it's radiation you're worried about, experts say you don't have to ditch your phone.
"There's no risk of anything hazardous or dangerous with radiation from cellphones, "said Gayle Woloschak, an associate dean and professor of radiology at the Northwesterm Univerity Feinberg School of Medicine. As with all cellphones, along with Wi-Fi networks, radio stations, remote controls and GPS, smartphones do send out radiation, said Emily Caffrey, an assistant professor of health physics at the University of Alabama at Birningham. They use invisible energy waves to transmit voices, texts, photos and emails to nearby cell towers, which can carry them to almost anywhere in the world. But nearly three decades of scientific research has not linked such exposures to medical issues like cancer, health authorities including the Food and Drug Administration say. Here's what we know.
"Radiation"describes many types of energy, some of which do carry risks, explained Dr. Howard Fine, director of the Brain Tumor Center at NewYork —Presbyterian Weill Cornell Medical Center in New York City, "It is often sent out from radioactive substances", Atomic bombs, or, to a far lesser degree, X-ray machines, send out energy called ionizing radiation that in high enough or frequent enough amount can damage DNA and cause cancer, Dr. Fine said.
But smartphone energy falls into a category called non-ionizing radiation, Dr. Caffrey said, which isn't powerful enough to cause this damage. "A lot of people think‘radiation is radiation, 'but it's not all the same, "Dr. Woloschak said. "There's no DNA damage seen from cellphone use. "
Most experts and health authorities like the F. D. A. and World Health Organization agree that there's no evidence that smartphone radiation causes health problems. Still, several studies over the years have made headlines for suggesting their links to brain diseases. Many of these studies have since been proved to be false, Dr. Fine said, including those focused on fifth-generation.
(1)、What does the underlined word"ditch"in Paragraph 1 mean?A、Make use of B、Keep track of. C、Get hold of D、Get rid of.(2)、Which statement best reflects the attitude of health authorities towards cellphone radiation?A、They consider it secure based on current research. B、They are indifferent due to lack of sufficient data C、They express concern and require strict regulations. D、They are doubtful and appeal for immediate action.(3)、What does this text mainly tell us?A、Forming a healthy lifestyle is vital. B、Smartphones need radiation limits. C、Radiation concerns are unfounded. D、Technology reduces radiation risks.(4)、Where would this text most likely appear?A、In a science magazine. B、In a collection of short stories. C、In a school newsletter. D、In a phone advertising brochure. -
20、 阅读下列短文. 从每题所给的 A、B、C 和 D 四个选项中. 选出最佳选项。
Researchers believe they have found evidence for a hidden ocean on Mimas, one of Saturn's major moons. This makes Mimas a target for learning more about the origins of life in our solar system.
Saturn has 146 moons orbiting it. The biggest is larger than the planet Mercury; the smallest is roughly the size of a sports field on the Earth. Mimas, which was first discovered in 1789, is one of the major moons and is about 250 miles wide.
Experts used to think Mimas was mostly made out of solid ice and rock. In 2014, astronomers noticed its orbit around Saturn was moving unsteadily. A shaky orbit can be caused either by a core shaped like a rugby ball or a huge liquid ocean beneath the surface. At first, lots of astronomers argued against the suggestion that Mimas had an ocean because there is no sign of it on the surface.
To investigate more thoroughly, researchers looked at images taken by Cassini, a NASA spacecraft sent to study Satun. The images showed that the moon's orbit around Saturn drifted by about six miles over 13 years. The team's calculations found that the only way Mimas could move in this way is if it had a hidden ocean under the surface. They think the ocean formed when the moon's core warmed up and melted some of the ice.
Mimas is just one of many moons that scientists think could have oceans below the surface Ganymede, which orbits Jupiter and is the largest moon in the solar system, has more water in its ocean than all of the oceans on the Earth. Titan, another of Saturn's moons, is believed to have a salty ocean beneath the surface.
Space agencies want to study these oceans because they might be home to living organisms. However, the ocean on Mimas might not be old enough for life to have emerged there yet. It took hundreds of millions of years for life to develop on the Earth and the ocean on Mimas is relatively young;it is less than 25 million years old.
(1)、What is the exploration of Mimas aimed at in Paragraph 1?A、Providing evidence for a hidden ocean. B、Exploring the beginning of life in outer space. C、Promoting research for space exploration. D、Ensuring harmony between man and nature.(2)、What is the main idea of paragragh2?A、The discovery of Saturn's moons. B、T he number and variety of moons orbiting Saturn. C、The size and characteristics of Mimas. D、The comparison between Satum and Mercury.(3)、What did astronomers initially think of the existence of oceans on Mimas?A、Confident. B、Indifferent C、Optimistic D、Doubtful(4)、Why did the researchers use Casini's images to investigate Mimas?A、To analyze its orbit. B、To measure its size. C、To observe its surface D、To find landing sites.