阅读下列短文, 从下面每个小题的A、B、C、D四个选项中选出最佳选项。

A study conducted by the University of Leeds in the United Kingdom suggest that watching cute animals may lead to a reduction in stress and anxiety.

The study examined how watching images and videos of cute animals for 30 minutes affects blood pressure, heart rate(心率) and anxiety. In December 2019, 19 people, including 15 students, joined in the study.

"There were some kittens, there was puppies, there were baby gorillas, there were quokkas —cute creatures found in Western Australia, are often referred to as 'the world's most cheerful animals'." Dr. Andrea Utley, a professor at the University of Leeds told CNN. The study was timed during winter exams, a time when stress is at an especially high level for students, according to Utley.

 The study recorded that the average blood pressure dropped from 136/88 to 115/71, which the study pointed out is "within ideal blood pressure range." Average(平均的) heart rates were lowered to 67.4 bpm, a reduction of 6.5%. Anxiety rates also went down by 35%.

"I was quite pleasantly surprised that during the session, every single measure for every single participant dropped some — heart rate reduced, blood pressure reduced," Utley said. "When they left, they filled the questionnaire(调查问卷) in again and showed that they were feeling less worried."

When questioning the participants, the study found that most preferred video clips over still images, particularly of animals interacting with humans.

Sports in ancient China

People in ancient China worked long hours each day. To relax, they  {#blank#}1{#/blank#}   (invent) many games. Some of them had a long history.

 Chuiwan 捶丸

Chuiwan was one of the ball games in ancient China, which was very popular in the Song Dynasty. "Chui" means "hit"{#blank#}2{#/blank#} "wan" means "ball" . This sport was similar to golf. On a large field, the players were divided into two groups. Usually there were 2 to 10 people in each group. They used a stick{#blank#}3{#/blank#} (hit) the ball into holes. Only when three hits into the hole were achieved did the player win the point{#blank#}4{#/blank#} (successful).

 Cuju 蹴鞠

First recorded 2,000 years ago, cuju is known as the  {#blank#}5{#/blank#}  (early) form

of football. The ball was made  {#blank#}6{#/blank#}  leather (毛皮) on the outside and filled

with rice bran (米糠) inside.{#blank#}7{#/blank#} (it) rules were similar to football's. Each

team usually had 12 or 16 players. No hands were allowed. Only  {#blank#}8{#/blank#} (foot)

and heads could be used. The ball should be hit into the opposite goal.

Archery 射箭

In the Western Zhou Dynasty, archery was {#blank#}9{#/blank#}important part of education for a gentleman. At the age of 15, they began learning shooting. The most famous competition was Grand Archery. It{#blank#}10{#/blank#}(hold) by the emperor. The competitors bowed before shooting and drank together after.

Jack is an English boy. He is a good student. He is twelve years old. Now he is in a red coat. Linda is Jack's sister. She is a nice girl. She is fourteen years old. Now she is in a green dress. Lucy and Lily are from the USA. They are students, too. They are in yellow coats. They look the same. Jack, Linda, Lucy and Lily are good friends. Jack, Lucy and Lily are in the same school. But Linda is not in the school. They like China.

The Great Wall in China is known to people all over the world. It1 the Ten﹣Thousand﹣Li Great Wall in Chinese. Do you know the famous Chinese saying "He who does not reach the Great Wall is not a2 man. "？

The Great Wall is3 wall in the world. It is more than 6，000 kilometres long，and4 four and five metres wide. In most places it is wide enough for five horses or ten men5 side by side（并排） along the top. It was very6 to build such a great wall without our modern machines. All the work had to7 by hand. Many people were made8 the wall away from their homes. Thousands of them9 and were buried（埋葬） under the wall. The Great Wall was made not only of stone and earth，but also of the flesh and blood（血肉）10 men. 

As we all know, we only have one earth. We share the earth {#blank#}1{#/blank#} animals. We want {#blank#}2{#/blank#} (know) more about our relationship with animals. Why are animals amazing? How do they help us? How do we protect them?

Here are some {#blank#}3{#/blank#}(interest) facts about animals. A giraffe has {#blank#}4{#/blank#}(long) neck in the world. An eagle can see {#blank#}5{#/blank#}(thing) from far away. A mouse can remember lots of {#blank#}6{#/blank#}(information). How many eyes does {#blank#}7{#/blank#} bee have? Five! The hummingbird can eat about {#blank#}8{#/blank#}(two) its weight in 24 hours. 

But now, some animals {#blank#}9{#/blank#}(lose) their homes. They are in great danger, {#blank#}10{#/blank#} we must do something to save them. It is necessary for us to take action(采取行动) to protect our animal friends. 

 As China grows stronger and stronger, more and more foreign people have started to learn Chinese. However, many of them have discovered it is very difficult to learn Chinese, especially at home without anyone' s help. A famous AI company(人工智能公司) in China has paid attention1 the problem. It has developed a smartphone app called iFlyChinese(全球中文学习平台).

 With the help of AI-based voice technologies, the app users can learn Chinese 2 and quickly. When users speak into the app in their own languages,3 app can turn the voice messages into Chinese. When 4 read sentences in Chinese, it will give them feedback(反馈). It can also correct(更正) their mistakes in their pronunciation 5 grammar. Finally, it will provide cards with words or pictures for users to practice and 6 .

 With the help of the app, many users have got the 7 to speak and use Chinese. Henry is one of them. He8 to learn Chinese two years ago. He has made great progress by 9 the app. Now he can have conversations with his friends in Chinese.

 The app has been very popular in foreign countries since it was developed. Now 10 people in more than one hundred countries are using the app.