题目内容

-------What do you suppose made him so unhappy?

------- ________ his wallet.

A. Losing B. Lost C. lose D. To lose

A

【解析】

试题分析:考查非谓语动词 。句意:你认为什么让他不高兴?丢钱包了。What在句子中做主语,只有动名词可做主语,故选A项。

考点 : 考查非谓语动词

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Medical scientists are already putting computer chips(芯片)directly into the brain to help people who have Parkinson’s disease, but in what other ways might computer technology be able to help us? Ray Kurzweil is the author of the successful book The Age Of Intelligent Machines. He is also one of the world’s best computer research scientists. He is researching the possibilities.

Kurzweil gets computers to recognize voices. An example of this is Ramona, the virtual hostess of Kurzweil’s website, created by the computer, who is able to understand what you say. Visitors to the website can have their own conversations with her. Ramona also dances and sings.

Kurzweil uses this technology to help people with physical problems. One of his ideas is a “seeing machine”. This will be “like a friend that could describe what is going on around,” he explains. Blind people will use a sensor(传感器)which will probably be built into a pair of sunglasses. This machine will describe to the person everything it sees.

Another idea, which is likely to help deaf people, is the “listening machine”. This invention will recognize millions of words and understand any speaker. The listening machine will also be able to translate what it hears into other languages, so even people without hearing problems are likely to be interested in using it.

But it is not just about helping people with physical problems. Looking further into future, Kurzweil sees a time when we will be able to store what we hear, see and think in a computer. This technology probably won’t be ready for at least 50 years, but when it arrives, it means our minds will be able to live forever.

1.Ray Kurzweil is .

A. a famous medical scientist

B. a computer research scientist

C. a patient with Parkinson’s

D. an inventor of computer chips

2. What can Ramona do?

A. She can talk with her visitors.

B. She can treat brain diseases.

C. She can help deaf people listen.

D. She can teach people to sing.

3. How can the “seeing machine” help blind people?

A. It can help to treat their eyes.

B. It can translate into other languages.

C. It can help them to see the future.

D. It can describe to them what it sees.

4. The word “virtual” in Paragraph 2 probably means .

A. 虚拟的 B. 友好的 C. 漂亮的 D. 忙碌的

5.What can be the best title for the text?

A. The Seeing Machines

B. The Listening Machines

C. The Intelligent Machines

D. The Translating Machines

Mosquitoes(蚊子) ruin countless American picnics every year, but around the world, this bloodsucking beast isn’t just annoying--it causes a health problem. More than a million people die from the spread of mosquito-borne diseases like malaria and yellow fever each year. Attempts to control populations via insecticides like DDT have had ruinous side effects for nature and human health. Neurobiologist Leslie B. Vosshall has a different solution for stopping the insects and the spread of disease. “I believe the key to controlling mosquito behavior is to understand better how they sense us,” she says.

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.

1.Vosshall and her colleagues are mainly studying mosquitoes’ ______.

A. appearance B. size

C. behavior D. change

2.By saying the underlined part “Then comes the hard part”, the author probably means that______.

A. the insects smell terrible

B. the experiment will last long

C. The researchers will probably suffer

D. the researchers have to study lots of documents.

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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