题目内容

–Guess what! Alice has failed in the exam.

– ____? She is second to none in English in our class.

A. How is it B. How come

C. What D. What is it

B

【解析】

试题分析：考查情景交际。句意——爱丽丝在考试中失败了。——怎么会呢？她在我们班英语是最好的。How come怎么会，可知选B。

考点：考查情景交际。

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--_______! I’ll tell Dad there’s nothing serious.

A. What a relief B. Congratulations

C. How surprising D. I’m so sorry

The principal suggested ____ more exercise to build up our health.

A. us to do B. we would do

C.our doing D. we did

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1.If now America has 250 million people．how many of them are engaged in agriculture and forestry?

A．About 25 million． B．More than 25 million．

C．Less than 25 million． D. Less than 225 million．

2.Which of the following four countries has the smallest proportion of people living in metropolitan areas?

A．United States B．Germany C．France D．England

3.What’s the meaning of the word “metropolitan” in the middle of the passage?

A. Of a large city with its suburbs．

B．Of small and large towns．

C．Of urban areas．

D．Of rural areas．

4. According to the passage，what can we learn about small towns in the United States?

A．Most small towns become gradually crowded．

B．Small towns are still similar to each other．

C．As the traditional picture is changing，towns are different．

D .Small towns are turning into large cities．

5.Why is it hard to say when a piece of country becomes a suburb?

A.Because they are the same．

B．Because the rush takes place too quickly．

C．Because the process is gradual．

D．Because more and more Americans live in metropolitan areas．

―The weather is changeable here. Please take more clothes.

― _________.

A. Well, it depends B. Thanks, by no means

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A. a ; the B. the ; a

C. the; the D. a ;a

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At their Rockefeller University lab, Vosshall and her colleagues are studying the chemical sensory processes by which mosquitoes choose hosts. How do they sense heat, humidity, carbon dioxide, and body odor(气味)? What makes some people more attractive to a mosquito than others? It takes blood and sweat to find out. To study how mosquitoes assess body odor, Vosshall and her teammates might wear stockings on their arms and keep from showering for 24 hours to create sample smells, Then comes the hard part. They insert their arms into the insects’ hidden home to study how mosquitoes land, bite, and feed and then they document how this changes. This can mean getting anywhere from one bite to 400, depending on the experiment. Studying male mosquitoes is more pleasant. Since they don’t feed on blood, the lab tests their sense of smell using honey.

Vosshall and her team have also begun to study how genetics contribute to mosquitoes’ choice of a host. She’s even created a breed that is unable to sense carbon dioxide, an important trigger for the insects. “By using genetics to make mutant(变异的) mosquitoes, we can document exactly how and why mosquitoes hunt humans,” Vosshall says.

Once Vosshall figures out what makes mosquitoes flock to us, she can get to work on making them leave us alone. Many of her lab’s proposed solutions sound simple enough, including bracelets(手镯) that carry long-lasting repellants(驱虫剂) or traps that can reduce populations, but the breakthroughs, when they come, may save millions of lives in the developing world—and a lot of itching everywhere else.

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A. appearance B. size

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A. the insects smell terrible

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3.Why is it less challenging to study male mosquitoes?

A. They are not bloodsuckers.

B. They are afraid of stockings.

C. They have a poor sense of smell.

D. They are protective of their hosts.

4.It can be inferred from the last paragraph that Vosshall’s research______.

A. looks very promising

B. has saved millions of lives

C. is facing great difficulties

D. is quite simple to carry out.

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A. play computer games with their children

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A. Parents shouldn’t entirely leave the education of children to the old.

B. 36% of the audience of the program are female aged from 25-34.

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D. In a modern family it is often mothers who are responsible for raising a child.

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A. Proud. B. Worried.

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— Don’t you remember my name?

— I’m really sorry. Your name ________ from my mind.

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