相关试卷

"There's a lot to discuss on the issue," says David Lindenmayer, a conservation ecologist at the Australian National University. "Climate change will mean that, in some forests, big trees won't reach the same sizes they used to." The effects of climate change, including long droughts, more invasive species and so on increase the simple physical challenges that big trees face in pulling water from their roots to their leaves and withstanding windstorms.

Lindenmayer and Laurance define "large, old trees" as the largest five percent mature trees within a species. The flexible definition means that in some forests, the large, old trees might be only 20 meters tall and 100 years old.

These large, old trees control the surrounding plant communities, affect water and nutrient distribution, and provide food and shelter for wildlife. "They're really the breadbaskets of the forest," says Laurance. "This is a very environmentally and ecologically important group of organisms, and they need special care and handling." Determining the distribution and habitat requirements for large, old trees in the landscape is the first step towards ensuring their survival, "We have to ensure that what we're thinking is long-term, to match the way these trees have existed for hundreds or even thousands of years," says Laurance. "It's going to be a real challenge to keep some places where there is still wildlife and the big church-like trees that we all really care about."

For the report published in Circulation: Heart Failure, researchers used machine learning to examine data from a large study from the Framingham Heart Study, referencing this data against two other studies. "Each study included at least 10 years of follow-up, and altogether the studies provided information on more than 21,000 U.S. adult participants," researchers said.

When analyzing the Framingham Heart Study, researchers noted that when compared to non-coffee drinkers, coffee drinkers' risk of heart failure decreased by 5% to 12% for each cup they drank each day. As for decaffeinated coffee, researchers noted that it did, not have the same benefits as caffeinated coffee, with one study suggesting that decaffeinated coffee may have an opposite effect.

Dr. David Kao, senior study author, said in a statement, "The relation between caffeine and heart failure risk reduction was surprising. Coffee and caffeine are often considered by the general population to be ‘bad' for the heart because people relate them to health problems like palpitations, high blood pressure, etc. The relationship between increasing caffeine consumption and decreasing heart failure risk turns that thought on its head."

"However, there is not yet enough clear evidence to prove that increasing coffee consumption can decrease the risk of heart disease with the same strength and certainty as stopping smoking, losing weight, or exercising," Kao noted. The researchers also warned that the findings only focused on black coffee, that is, plain coffee, without added sugar and high-fat dairy products such as cream.

The father had been making a career taking photographs for advertisements. But that experience gave him a new direction. Around the world, insect populations are in decline because of habitat loss and climate change. Biss thought that if people could see what he saw through his son's microscope, they would care more about protecting insects.

So Biss turned to macrophotography: taking close-up pictures of small things, like flowers or bugs. His work has attracted attention not just for its unusual beauty. It also raises awareness about the need for conservation.

In 2016, Biss showed his first insect project, Microsculpture. The term refers to the features of an insect's exoskeleton, or outer shell, which develops over time as the bug adapts to its environment.

Biss's pictures capture the insects in all their microscopic details. Then he blows up the images until the insects become larger than life, some of them eight feet tall. But each image takes weeks to make. He uses a digital camera with a microscope lens. The camera is fixed on a computerized track, which allows Biss to take a shot, then move the camera by seven microns (微米) — a distance equals to about 1/10 the thickness of a human hair — for the next shot. In the end, Biss might take 10,000 shots of a bug. A computer combines these small pictures into a single image.

Biss's latest exhibition is Extinct and Endangered at the American Museum of Natural History. He selected bugs that were extinct or endangered, hoping his photographs would serve as a better purpose. "I communicate visually," he says, "The way I work is through pictures. But I think it's my duty to shake things up and get people to pay attention."

Black Canyon (峡谷) of Gunnison National Park

This park offers the most breathtaking views from up in the mountains into the canyons below. While exploring the canyons, you will find that the walls drop nearly straight down into the narrow valleys of the snake-like rivers below. Visitors are offered more than 100 camping sites, and a lot of bird species and many animals are native to the area.

Rocky Mountain National Park

It is the only national park in the north central region in the state of Colorado. Elevations in this park are anywhere from 8,000 feet to 14,259 feet at the top of Longs Peak. While traveling throughout this park you will notice two very different climates because of the difference the upper peaks of the Rocky Mountains make. You can enjoy 359 miles of hiking trails, a lot of places for camping, horse-back riding and beautiful scenery.

Mesa Verde National Park

This is probably the most interesting national park, offering a fascinating trip back in time to 600 AD up to 1300 AD．This park was declared a protected national park in 1906 because of the cliff dwellings(住所) that were found throughout the area, which were once home to American Indians. Many of these dwellings can be walked through, while you imagine what each room may have been used for so many years ago.

Great Sand Dunes (沙丘) National Park

The Great Sand Dunes National Park lies in south central Colorado, about 127 miles from Pueblo. This park has the tallest sand dunes in all of North America and has trails for hiking. The natural sandy beaches around the small rivers and lakes are good for swimmers.

8-year-old Evan was standing by the sidewalk when he noticed Mrs. Carter opening her shop. He smiled, relieved that the shop had not permanently closed.

Two days ago, when Evan was passing by her store, he saw a closed sign on the store's door and a post-it note that read Mrs. Carter was sick. When the shop remained closed for not just two days but a whole week, Evan was worried he'd never be able to get his "dream job."

85-year-old Mrs. Carter was a pretty woman who sold flowers for a living and he had befriended her when she helped him cross the street one day.

While Evan stood by the curb, smiling, Mrs. Carter turned around and saw him looking in her shop's direction. She waved hello to him, and he ran up to her and greeted her. "Can I help you today, young man? Do you want flowers?" Mrs. Carter asked. Evan smiled, "I'm looking for a job! Can you please hire me?"

"A job?" the elderly lady laughed, thinking Evan was too little for that. But Evan proudly replied he knew many things, like making sandwiches and helping his mom get grocery bags from the car. Mrs. Carter laughed and asked Evan how much money she would have to pay him if she hired him.

Evan shook his head. "All I want is a big bouquet (花束) for my mom. Her name is Stacey and her birthday is one week away. Mom says we should work hard for what we want. I want to work hard for that bouquet. Can you hire me?" Evan asked. Mrs. Carter was impressed and nodded.

After he was hired, Evan's happiness knew no bounds. For a whole week, he would come to Mrs. Carter's store in the evenings and help her, and having Evan around relieved Mrs. Carter's boredom while working. Some customers thought Evan was lovely and entertaining, so they bought more flowers. Mrs. Carter's business became better.

A week later, on Evan's last day on the job, Mrs. Carter was emotional. They had grown close for working together, and Evan had become like a grandchild to her. She was making a huge bouquet for his mother, and her eyes welled up. Mrs. Carter secretly placed one envelope into the bouquet. The envelope contained $1100. When handing him the bouquet, she said, "Will you come to see me someday, Evan? I'd be delighted to have you here."

"I will, Mrs. Carter! I will tell mom about you today! She'll be so happy!" Evan smiled and waved goodbye to Mrs. Carter.

注意：1. 续写词数应为150左右：

2. 请按如下格式在答题卡的相应位置作答。

Carrying the flowers, Evan rushed home to surprise his mom.

____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

Then, Evan and his mom hurried to return the money to Mrs. Carter.

____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

1. 活动时间（2025年3月15日）和地点（客家公园）；

2. 展会内容（客家山歌、客家服饰、书法等）。

注意：1. 写作词数应为80个左右；

2. 请按如下格式在答题卡的相应位置作答。

参考词汇：calligraphy 书法

Dear Chris,

____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

Yours,

Li Hua

Flower gardens can also have pests, so you'll want to test what works in your area. In some regions, like the Pacific Northwest, slugs (蛞蝓) can eat your entire dahlia patch. In Michigan, roses struggle to survive extreme temperature changes from summer to winter, so be sure to choose flower varieties that are suitable for your growing zone and sun exposure.

This is just a starting point, but we hope we've given you some ideas to explore as you begin your sustainable garden. The great thing is, sustainable gardening is easier than farming with pesticides if you learn to manage your land properly. You can skip the weed killer, the chemical fertilizers, and the pest control chores if you just keep an eye on your plants or cut off diseased stems to prevent rot or mold from spreading.

One final note: drip irrigation is very popular in warmer climates for saving water, but these systems can block with dirt and be difficult to set up. You could try running a pipe from your faucet and splitting it with a timer into zones with wobbler (摇摆器) sprinklers. Set up the timer to run each sprinkler zone for about half an hour every morning in succession, and never water right before sunset if you're in a mold-prone (容易发霉的) climate. If you remove mold from roses and pest rot from stems and never plant a diseased dahlia to avoid spreading problems to other plants, you'll become a skilled sustainable gardener in no time.

Whatever your cup of tea is, you' re bound to find something that tickles your fancy at the Camden markets. It consists of more than a dozen of regular markets, with some of the most famous happening in Camden Lock, a legendary area in Camden Town. The Camden markets draw in 250, 000 tourists every week.

But believe it or not, the Camden markets are a relatively new addition to London, as the area surrounding Camden Lock was used primarily for agricultural and industrial purposes since before the 1800s.

Camden Market Highlights

Camden Lock Village     Out of all the markets located in Camden, it is perhaps the most famous. These covered markets are full packed full of all sorts of unique and handmade items.

Camden Lock Market   Not just limited to clothing, here you can also find food stalls offering food from all over the world, as well as handmade jewellery, second-hand clothing, books, and other random household items you won't find anywhere else in the city.

Inverness Street Market     It may not be as big as the other Camden markets but don't let that stop you, as here you will find a variety of different specialty shops, as well as countless bars and restaurants. It is also a popular hang-out among locals for its fruit and vegetable markets, which have been around since the early 1900s.

Camden High Street     It is a highly popular shopping area, and is packed full of independent shops, pubs and restaurants, many of which feature some interesting designs and logos on their facades (正面) that are worth taking a photo of. As a matter of fact, no Camden Town photo collection would be complete without a shot of the massive dragon at Camden High Street.

Visiting Information

● Open: Every day:10:00AM to 6:00PM

● Time Needed: 2.5 hours

● Price: Free

1.活动过程；

2.活动反响。

注意事项：

1.写作词数应为80个左右；

2.请按如下格式在答题卡的相应位置作答。

___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________