[题目]-- What does Jack do in that company?-- I’m not sure. He be a salesman.A. can’t B. might C. must D. can 题目和参考答案——青夏教育精英家教网—

题目内容

【题目】—— What does Jack do in that company?

—— I’m not sure. He ________ be a salesman.

A. can’t B. might C. must D. can

【答案】B

【解析】

试题分析：句意：杰克在那家公司是做什么的？——我不确定。他可能是一名销售员。在英语中，情态动词可以表示推测，肯定的推测用must，一定是；否定的推测用can’t，不可能是；might或许是，把握性不大。依据句意，答案为B。

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--- Yes, they always make me _______ my homework before I go out.

A. to finishing B. finish C. finishing

【题目】

Your brain controls everything you do. It makes it possible for you to think, learn, create and feel; to blink(眨眼) and breathe and for your heart to heat –this fantastic control center is your brain. It is so amazing that a famous scientist once called it “the most complex(复杂) thing we have yet discovered in our universe”.

Can this small grey organ(器官), which weighs less than one and a half kilos, really do so much? Amazingly, your brain contains about 100 billion neurons(神经元) -it would take you over 3 ,000 years to count them all. Believe it or not, the activity in your brain never stops. Your neurons create and send more messages than all the phones in the world. And although one neuron creates only a little electricity, all your neurons together can produce enough electricity to power a light bulb (灯泡).

So exactly how fast does your brain work? Well, imagine this: a bee lands on your foot. Neurons in your skin send this information to your brain at a speed of more than 240 kilometers per hour. Your brain then uses other neurons to send the message back to your foot to shake the bee off quickly. These neurons can send this information at more than 320 kilometers per hour. No computer has your brain's unbelievable ability to deal with the amount of information coming from your eyes, ears and other sensory organs.

But how does your brain allow you to learn things that you will use in the future? The structure (结构) of your brain changes every time you have a new thought, remember or learn something. For example, riding a bike seems impossible at first, but soon you are able to do it. How? As you practice, your brain sends "bike riding" messages again and again Soon, the actions are learnt and you are able to ride a bike easily from then on.

【1】From the passage we know that neurons___________.

A. receive messages very slowly B. are only found in your skin

C. send messages to your brain D. need electricity to work

【2】In Paragraph 3, the writer mentions computers to ___________ .

A. compare them with the human brain

B. show how fast they have become

C. say that computers have no abilities

D. ask people to use computers more

【3】When you have a new thought, ___________ .

A. your brain will power a light bulb B. your heart beats faster

C. you remember something D. the structure of your brain changes

【4】Which of the statements about the brain is TRUE?

A. The speed of the neurons in the brain can be up to 320 kilometers per minute.

B. The electricity produced by the neurons can hardly power a light bulb.

C. We learn a new skill by sending the messages again and again through the brain.

D. After receiving the information, the brain send the same neurons back to your foot.

【5】The article is mainly about ___________.

A. all the steps when your brain learns things

B. what an unbelievable organ the human brain is

C. how the brain makes people smarter than computers

D. the things you can do to make your brain work faster

【题目】 Don’t ________ if you want to achieve your goal.

A. get up B. come up C. give up D. put up

【题目】—______ do you usually eat junk food?

—I _______ eat it, so I’m healthy.

A. How often; always

B. How long; often

C. How often; hardly ever

【题目】—Who is _____, Tom, Jim or David?

—I think Jim is.

A. stronger B. strongest C. the strongest

【题目】 There are lots of great watery wonders in the world, but some are disappearing.

The Dead Sea

At 430 meters below sea level, the Dead Sea is Earth's lowest point on land. It is popular for its wonderful buoyancy*. The high salt content makes swimming more like floating.

Now the Dead Sea is actually dying. People are using water from the Jordan River, which takes water away from the Dead Sea. Since 1930, its surfing area has reduced by almost 40 percent.

Venice, Italy

With waterways instead of streets. This "Floating City" has attracted visitors for centuries. But no visit to Venice is complete without a ride on one of its famous gondolas, human powered water taxis. Water creates Venice. But water will also kill the city.

Built on soft earth, Venice has slowly been sinking for centuries. Now, with

rising sea levels caused by human activities, it's sinking faster. The city may disappear in the next 100 years.

Great Barrier Reef

Covering more than 2,300 kilometers of Australia's northeast coast, Great Barrier Reef is the world's largest reef ecosystem, and an ideal place for scuba divers*. Thousands of colorful coral and fish make homes in the blue sea water. It's like a big underwater party!

Sadly, the party might be over soon. The reef is dying. Human activities are

changing the weather. Warming ocean water kills the coral, and this causes problems up the food chain. The reef system might be gone by 2030.

【1】If you swim in the Dead Sea, it’s easy to _______?

A.Float in the water .B.Sink in the water.

C.Disappear in the water.D.Kill in the water.

【2】Which of the following is the shared cause of the problems all the three places are facing?

A.Water loss.B.Sea pollution.

C.Warming seas.D.Human activities.

【3】If Tom wants to visit all the following places before they are gone, and he can only afford one in the next 10 years, where must he go?

A.The Dead Sea.B.Venice.C.Italy.D.Great Barrier Reef

【题目】—Betty is different from others. She enjoys coins.

A. collect B. to collect C. collecting

【题目】— Shall I tell John about it?— No, you _______. I told him just now.

A. needn’t B. can’t

C. mustn’t D. shouldn’t

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