2020年職稱英語考試《理工類》考試共65題，分為單選題和多選題和判斷題和計(jì)算題和簡(jiǎn)答題和不定項(xiàng)。小編為您整理歷年真題5道練習(xí)題，附答案解析，供您備考練習(xí)。

1、One Good Reason to Let Smallpox Live
It's now a fair bet that we will never see the total extinction (滅絕) of the smallpox (天花) virus. When smallpox was completely got rid of in the world, scientists wanted to destroy the killer virus in the last two labs, one in the US and one in Russia. They asked: If smallpox has truly gone from the planet, what point was there in keeping these reserves?
In reality, of course, it was naive to imagine that everyone would let go of such a powerful potential weapon. Undoubtedly several nations still have a few vials (小藥瓶). And the last "official" stocks of live Virus bred mistrust of the US and Russia, for no obvious gain.
Now American researchers have found an animal model of the human disease, opening the way for tests on new treatments and vaccines(疫苗). So once again there's a good reason to the virus, just in keep the disease puts in a reappearance.
How do we case with the mistrust of the US and Russia? deal. Keep the virus Simple international support in a well - guarded UN laboratory that's open to all countries. The US will object, of course, just as it _____ a multilateral (多邊的) approach to just about everything. But it doesn't mean the idea is rejects. If the virus is useful, then let's wrong it the servant of all humanity make not just a part of it.
【單選題】

A.for

B.in

C.on

D.with

正確答案:D

答案解析:本題有一定難度，考查介詞with的用法，干擾項(xiàng)有一定的干擾。with support，固定搭配，指“在……幫助下”，此處指“在國際社會(huì)幫助下”，原句比較好的理解語序是：Keep the virus in a well - guarded UN laboratory with international support…，答案要根據(jù)介詞的基本含義和用法來判斷，答案是D。

2、The great change of the city astonished all the visitors.【單選題】

A.surprised

B.scared

C.excited

D.moved

正確答案:A

答案解析:這座城市發(fā)生的大變化使所有的參觀者驚訝。本題難度不大，干擾項(xiàng)干擾不強(qiáng)。astonished和surprised都可指“吃驚的”，B項(xiàng)指“使驚嚇”，最佳答案是A。

3、Light Night, Dark Stars
Thousands of people around the globe step outside to gaze at their night sky. On a clear night, with no clouds, moonlight, or artificial lights to block the view, people can see more than 14,000 stars in the sky, says Dennis Ward, an astronomer(天文學(xué)家) with the University Corporation for Atmospheric Research( UCAR) in Boulder, Colo. But when people are surrounded by city lights, he says, they're lucky to see 150 stars.
If you've ever driven toward a big city at night and seen its glow from a great distance, you've witnessed light pollution. It occurs when light from streetlights, office buildings, signs, and other sources streams into space and illuminates (照亮) the night sky. This haze (朦朧) of light makes many stars invisible to people on Earth. Even at night, big cities like New York glow from light pollution, making stargazing difficult.
Dust and particles of pollution factories and industries worsen the effects of light pollution. "If one city has a lot more light pollution than another," Ward says, "that city will suffer the effects of light pollution on a much greater scale."
Hazy skies also make it far more difficult for astronomers to do their jobs.
Cities are getting larger. Suburbs are growing in once dark, rural areas. Light from all this new development is increasingly obscuring (使變模糊) the faint (微弱的) light give off by distant stars. And if scientists can't locate these objects, they can't learn more about them.
Light pollution doesn't only affect star visibility. It can harm wild life too. It's clear that artificial light can attract animals, making them go off course. There's increasing evidence, for example, that migrating (遷徙) birds use sunsets and sunrises to help find their way, says Sydney Gauthreaux Jr. , a scientist at Clemson University in South Carolina, "When light occurs at night," he says, "it has a very disruptive (破壞性的) influence." Sometimes birds fly into lighted towers, high - rises, and cables from radio and television towers. Experts estimate that millions of birds die this way every year.
On a clear night, people can see ______.【單選題】

A.150 stars

B.hundreds of stars

C.one thousand stars

D.more than 14,000 stars

正確答案:D

答案解析:本題難度不大，答案依據(jù)比較明顯，在文章第一段第二句，這句話主要談到，在晴朗的夜晚人們能看到14，000多顆星星，回來看選項(xiàng)，D項(xiàng)符合原文句意，是答案。

4、Houses of the Future
What will houses be like in thirty years' time? No one really knows, but architects are trying to predict. What will our home be like then?
Future houses will have to be flexible. In thirty years' time even more of us will be working from home. So we will have to be able to use areas of the house for work for part of the day and for living for the rest. Families grow and change with children arriving, growing up and leaving home. The house of the future will have to grow and change with the family. Nothing will be as fixed as it is now. The house will always be changing to meet changing needs.
Everyone agrees that in thirty years' time we will be living in "intelligent" houses. We will be able to talk to our kitchen machines and discuss with them what to do. Like this, "We'll be having a party this weekend. What food shall we cook?" And the machine will tell us what food we will have to buy and how to cook it. We will be able to leave most of the cooking to the machines, just tasting things from time to time to check.
The house of the future will be personal, each house will be different. _____.You won't have to paint them-you'll be able to tell the wall to change the color! And if you don't like the color the next day, you will be able to have a new one. The only thing you won't be able to do is move the house somewhere else!
【單選題】

A.You will be able to change the color of the wall easily.

B.The only thing you won't be able to do is move the house somewhere else!

C.And the machine will tell us what food we will have to buy and how to cook it.

D.What will our home be like then?

E.The house of the future will have to grow and change with the family.

F.The kids might take their bedrooms with them as they leave.

正確答案:A

答案解析:本題難度不大，下文的信息提示比較明顯，可用排除法和代入法。本題的上文談到，未來的房屋將會(huì)個(gè)性化，每一所房子都會(huì)不同。下文緊接著談到，你不必給墻油漆顏色，這句話信息提示很明顯，表明此處肯定要談墻的漆色問題，否則會(huì)出現(xiàn)語意中斷的情況?；貋砜催x項(xiàng)，使用排除法和代入法，可以確定A是正確答案。

5、Marsha confessed that she knew nothing of computer.【單選題】

A.admitted

B.reported

C.hoped

D.answered

正確答案:A

答案解析:瑪莎承認(rèn)她對(duì)計(jì)算機(jī)一無所知。本題難度不大，干擾項(xiàng)干擾不大，是送分題，可以確認(rèn)，confessed和admitted都是“承認(rèn)”的意思，所以最佳答案是A。