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The history of Teachers' Day (date) back to the Han Dynasty. According to records, during the Han and Jin dynasties, every year August 27, Confucius' birthday, the emperor,(follow) by court (宫廷) officials, would visit the Confucius Temple(pay) tribute(敬意) to the ancient philosopher and invite royal teachers to the court for a meal.

Local officials followed the court, and on this day, teachers across the country enjoyed a day's holiday and received dried meat as gift. Teachers with outstanding performance would (pick) from colleges and learning institutions throughout the country, reported to the court, and given 500 liang silver coins as a prize.

(normal), an ancient teacher's income included salary, accommodation festival gifts. In private schools, teachers always received money or gifts from the host family at certain festivals or at the(begin) and end of each semester. The festivals in teachers received gifts varied from region to region, while the most valued ones were the Duanwu, Mid-autumn and Chinese New Year festivals, as well as Confucius' birthday and the private tutor's birthday.

Shanya's1 came after a fire destroyed a restaurant in her neighborhood during the summer of 2022. "I had never really2 something like that before," she talked about the early morning's3 happening at the restaurant, which started in the kitchen. "They had smoke detectors (探测器), yet4 it still burned down," she5.

She spent more than a year developing a fire detection system that could have6 the fire. Smoke detectors sense active fires from the7 in the air. Shanya's thermal imaging device (热成像设备) is8 to stop fires from occurring. Her system has two9, a thermal camera and a tiny computer. The device detects a heat source which has been left10 for ten minutes and sends a text message alarm.

"I had two designs, and my first design completely11. It was a really big problem I had to12," she said. The final device proves useful in speed and accuracy. Shanya wants to bring the costs down to $60 to make it even more13 than smoke detectors.

"Shanya saw a14 and tried to solve it. That's what I15 all young people to do," said a scientist.

How can we keep healthy? In order to eat healthily, I usually avoid eating food high in fat, like French fries or cookies, which are junk foods. Besides, I only eat a little meat.

Taking exercise every day helps us build a strong body. Regular exercise is an important part of keeping me healthy.

What's more, I think friends are an important part of one's health. I always feel better when I am with friends than when I am alone. When I am with my friends, I always laugh. Laughing is also an important part of health. It is good to stay with my friends.

By eating properly and exercising regularly, I can keep my body at a proper weight and keep healthy. By spending time with my friends, I can keep my mind as well as my body happy. These things sound easy to do, but not many people can manage them.

A. On the other hand, doing exercise is very important.

B. There are some people who like staying alone, but they keep healthy.

C. Many studies show that people with a range of social contacts don't get sick.

D. But if our health were taken away, it is certain that we would surely die.

E. I eat a lot of vegetables and fresh fruit which are full of vitamins.

F. I think a strong will is necessary if we want to keep healthy.

G. Some people appear fat because they often eat too much.

A. Unfortunately though, children who are under nine years old are not allowed to take part in these programs which last five days.

B. One of the many attractions is the "Gravity Chair", which lets you see how difficult walking in space really is! There is also a project which gives you the chance to build your own rocket and see it take off!

C. Space Camp, Florida, which is right next to NASA's famous Kennedy Space Center, is a place where people can go to learn about space travel. Many activities are offered, which provide visitors with the excitement of being in space.

D. The cost for adults is 875 and kids 550. There is a family ticket of $1,500. It is a little expensive, but it is really worth it.

E. Camp programs are available for children and adults who want to experience an astronaut's life. The "Space Habitat" is a place where you can sleep in a special bed, just like a real astronaut!

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On the one hand, the use of social media has made it easier for students to keep in touch with their peers off campus. Platforms like Facebook, Instagram, and WeChat have become popular among students, allowing them to share their daily lives, engage in online conversations, and form virtual communities. Meanwhile, Digital technology has also changed the way students communicate with their instructors. With email and online chat platforms, students can easily contact their teachers for clarification on assignments, grades, and course content. This has improved communication between students and faculty, leading to a better learning experience.

On the other hand, digital technology has also revolutionized the way students learn. With online courses and virtual classrooms, students can access a variety of courses from the comfort of their own homes. This has opened up opportunities for students to pursue their passions and interests outside of their majors. Actually, it has made it easier to promote and participate in multiple campus events. Students can easily create online campaigns to promote events, organize events using online calendars, and even stream events live over the Internet. This has made it possible for more students to get involved and participate in various campus events.

Another benefit which is often ignored is its positive impact on their mental health. With online resources, such as anxiety apps and depression support groups, students can deal with stress and anxiety. They can seek help when in need, as online counseling services are available 24/7.

Digital technology has transformed campus life in numerous ways. While digital technology has brought many benefits, it has also raised concerns about its negative impact on student lives.

In the United States, feeding dolphins is illegal under the Marine Mammal Protection Act of 1972, but it still happens often. Even though we might not mean to, with just our presence, we're conditioning animals to be around humans more. That closeness increases a dolphin's risk of being struck by a boat, trapped in a fishing line, or caught by a fishing hook.

Dolphins are smart and social animals and their begging has motivations. Getting fish from people instead of hunting could allow female dolphins to save time and energy that they can instead put toward reproduction. It makes sense that the dolphins eating up bait (诱饵), getting fish from a fisher's line, and approaching boats for food can have more babies. However, studies of other species around the world, such as green sea turtles in the Bahamas, show that animals that become dependent on human handouts stop hunting for food. This is true of Sarasota Bay's dolphins, and it's a preference that they pass on. Dolphins from one family have been approaching boats for four generations. That behavior is even more dangerous for the youngsters — little dolphins can be killed by boats or fishing equipment as they try to stay close to their moms.

For these dolphin mothers, losing multiple babies one by one likely causes emotional distress. Over time, this stress on female dolphins and the deaths of so many babies could cause population numbers to fall.

We can't stop the dolphins from interacting with humans. But we can teach people to enjoy wild animals from a safe distance. And for dolphins' own good, stop giving them food.