It’s sad to learn that a whale has died in the ocean. However, that’s not the end for the whale. It has a lot to give to other sea animals after death.

When a whale dies, it quickly sinks (下沉) to the bottom of the ocean floor. There, the whale body provides food and nutrients (营养) to deep-sea animals, which are often hungry for food. The remains can last for hundreds of years and create a complex ecosystem called a whale fall (鲸落).

Chinese scientists found a whale fall for the first time in the South China Sea during a deep-sea expedition (考察) carried out by oceanic research vessel (舰) Tansuo-1, which finished its expedition on April 2, 2020. Tansuo-1 carried the manned submersible (潜水器) Shenhai Yongshi, which is able to dive to a depth of 4,5000 meters.

The whale fall in the South China Sea is about three meters long. Scientists have found several species (物种) of shrimp and fish near the whale fall. Some fish have started to eat the whale’s tail. The whale fall might be quite recent and needs long-term observation (观察), according to Xie Wei, a scientist who took part in the expedition.

The whale fall ecosystem can exist in the deep ocean because great pressure and cold temperatures there prevent body from decomposing too quickly. But the depth also makes it hard for scientists to discover them. There are about 50 known whale falls in the world.

By studying the whale fall, scientists can better understand how marine (海洋的) ecosystems support life and how to protect biodiversity (生物多样性) resources in the deep sea.

1.What does the writer try to describe in the second paragraph?

A.when a whale fall happen. B.where a whale fall happen.

C.why a whale fall happen. D.how a whale fall happen.

2.Which sentence about the whale fall in the South China Sea is wrong?

A.It was found during a deep-sea expedition.

B.There was several species of shrimp and fish around it.

C.Scientists have finished the study of it.

D.Scientists from China found it on April 2, 2020.

3.The underlined words “decomposing” in Paragraph 5 means _________.

A.putting in B.going bad C.falling over D.setting off

4.Why do scientists study the whale fall?

a. To understand how marine ecosystem support life.

b. To find how long the whale fall is.

c. To protect biodiversity resources in the deep sea.

d. To study whether fish eat the whale’s tail.

A.a b B.a c C.b c D.b d

5.Which magazine can we probably find this article in?

A.Science. B.Geography. C.Mystery. D.Travel

A live-streaming app that monitors (监控) students in classrooms in some middle schools has raised a lot of online discussion. It was reported that any user of the app Shuidi could see inside classrooms. Some parents have praised the app for giving them the chance to monitor their children, while others worry about privacy problems. Do you think the app is a good idea?

Zhang Xiaoru, 16:

I strongly support this app. Nowadays, children play an important role in the whole family, and parents always want to care for their children, wherever they are. This app helps parents see what their children are doing in classes. It’s also a good way to make students behave themselves in school.

Du Yina, 15:

I’m a supporter of this app if parents get their children’s permission (准许) first. The app could help parents focus on children’s bad habits. It could also be used as a tool to prevent bullying (霸凌). However, parents should get their permission first to protect their privacy.

Zhao Xuehan, 16:

I think this app is a bad idea. Schools should be a pleasant and relaxing place for students to study and play. But we will feel uncomfortable if cameras are watching us all the time. We should pay attention to our privacy. Our lives shouldn’t be watched by the public.

Zhang Liliang, 15:

Any form of privacy invasion (侵犯) shouldn’t be allowed. Although some parents want to know more about their children, they should do it in a better way. Being under the eye of strangers is too dangerous.

1.What does the live-streaming app do?

A.It plays educational videos in class. B.It lets students join online discussions.

C.It reports on which apps teachers use. D.It monitors students in classrooms.

2.On which condition does Du support the app?

A.Parents should get their children’s permission before using it.

B.Parents can change their children’s bad habits through the app.

C.The app could be used as a tool to prevent bullying.

D.The app is able to protect students’ privacy.

3.According to what Zhao Xuehan said, what does she do?

A.She is a student. B.She is a teacher. C.She is a parent. D.She is an app maker.

4.Zhang Liliang thinks the app is dangerous because it will _____.

A.invade students’ privacy B.allow parents to see something they shouldn’t see

C.force students to do things they don’t want to do D.hurt people’s eyes

5.Which of the following is TRUE?

A.Now most middle schools have used apps to monitor students.

B.Different people have different opinions about using the app.

C.Zhang Xiaoru supports the app only in some ways.

D.Middle schools aren’t allowed to use this app.

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