Unit 13 We're trying to save the earth 阅读能力拔高练 (解析版) -2021-2022学年九年级全册英语干货拔高秘课（人教版）

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Unit 13 We're trying to save the earth!

Should we be afraid of sharks? Maybe not. Some scientists do some research about the causes of

shark attacks（袭击）and say that sharks don’t like the taste of humans! In fact, most people who

were attacked didn’t die. They usually received only one bite（咬伤）. Why is this?

There are many explanations（解释）of why sharks sometimes attack people. One is that sharks are

just curious.

We know that sharks are the strongest animals in their environment, so they are not afraid of

anything. It means they are curious when they see something unusual. Because they don’t have hands

or feet, the only way they can learn about an object is to bite it. It is thought that sharks sometimes

bite humans for this reason, and then swim away.

Scientists also say that sharks don’t want to waste energy trying to eat a human, because we have

a lot of bones（骨头）. It is hard for a shark to eat us because sharks don’t have hands, and they

can’t pull the meat off our bones. Maybe that’s why they only bite us once.

Another guess is that sharks attack humans by mistake. Some sharks, such as the great white sharks,

may sometimes mistake humans for a seal（海豹）. People lying on the sea looks like seals when

seen from below. Sharks like seals because they are fat and delicious.

No matter why shark attacks on humans, sharks should be afraid of us. Sadly, we kill almost 40

million of them each year.

1．The underlined word “curious” means “______” in Chinese.

A．好奇的 B．恐惧的 C．激动的 D．烦躁的

2．What might sharks think of humans?

A．Friendly. B．Strong. C．Not delicious. D．Convenient to eat.

3．Why does the writer say sharks should be afraid of humans?

A．Because humans have hands and feet.

B．Because many sharks are killed by humans.

C．Because their living environment is polluted by humans.

D．Because there are more humans than sharks in the world.

4．What would the author write the passage mainly for?

A．To tell surfers to stay away from sharks.

B．To ask people to stop killing sharks.

C．To let us know the reasons for shark attacks on people.

D．To show that humans are much stronger than sharks.

【答案】1. A 2. C 3. B 4. C

【解析】本文主要介绍了为什么不应该害怕鲨鱼以及鲨鱼袭击人们的原因。

【1题详解】

词义猜测题。根据“Because they don’t have hands or feet, the only way they can learn about an

object is to bite it.”可知，鲨鱼咬人是因为想弄清楚这个物体是什么，是出于好奇，所以

“curious”的意思是“好奇的”。故选 A。

【2题详解】

推理判断题。根据“Some scientists do some research about the causes of shark attacks and say that

sharks don’t like the taste of humans!”可知，鲨鱼不喜欢人类的味道，可能会认为人类不好吃。

故选 C。

【3题详解】

细节理解题。根据“No matter why shark attacks on humans, sharks should be afraid of us. Sadly,

we kill almost 40 million of them each year.”可知，很多鲨鱼被人类杀死，所以鲨鱼应该害怕人

类。故选 B。

【4题详解】

主旨大意题。通读全文可知，本文主要介绍了为什么不应该害怕鲨鱼以及鲨鱼袭击人们的原

因。故选 C。

Air pollution is a big problem for cities in most countries. Many people are dying from it. But

how can we tell the air quality is good or bad?

On a tree next to a river in Amsterdam, a tiny birdhouse glows (发光) bright green when the air

is clean. If you're standing nearby, the birdhouse will also give you a free Wi-Fi connection—but only

if pollution level is low enough. The designer is Joris Lam. His birdhouse tells you about the air

quality.

Joris’ birdhouse is called TreeWifi. It can be put on a tree around your house to test the air

quality. People can see a screen with information about the local air quality and how to improve it.

TreeWifi is a simple way for people to know about the air pollution around them. If the birdhouse

does not glow, people should care more about the environment. It reminds them to change their

lifestyles. For example, to protect the air, they can ride bikes or just walk instead of driving cars.

“Imagine if trees gave free Wi-Fi, people would plant more trees like crazy. It's a pity that they

only give us the oxygen(氧气) we breathe,” Joris said.

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