2021年职称英语考试《理工类》考试共65题，分为单选题和多选题和判断题和计算题和简答题和不定项。小编每天为您准备了5道每日一练题目（附答案解析），一步一步陪你备考，每一次练习的成功，都会淋漓尽致的反映在分数上。一起加油前行。

1、Easy ListeningStudents should be jealous. Not only do babies get to doze their days away, but they\'ve also mastered the fine art of learning in their sleep. By the time babies are one year old, they can recognize a lot of sounds and even simple words. Marie Cheour at the University of Turku in Finland suspected that they might progress this fast because they learn language while they sleep as well as when they are awake. To test the theory, Cheour and their colleagues studied 45 newborn babies in the first days of their lives. They exposed all the infants to an hour of Finnish vowel sounds one that sounds like "oo"; another like "ee" and the third boundary vowel peculiar to Finnish and similar languages that sounds like something in between. EEG (脑电图) recording of the infants brains before and after the session showed that the newborns could not distinguish the sounds. Fifteen of the babies then went back with their mothers, where the rest were split into two sleep-study groups. One group was exposed throughout their night-time sleeping hours to the same three vowels, while the others listened to the other, easier-to-distinguish vowel sounds. When tested in the morning, and again in the evening, the babies who\'d heard the tricky boundary vowels all night showed brainwave activity indicating that they could now recognize this sound. They could identify the sound even when its pitch was changed, while none of the other babies could pick up the boundary vowel at all. Cheour doesn\'t know how babies accomplish this nighttime learning, but she suspects that the special ability might indicate that unlike adults, babies don\'t "turn off" their cerebral cortex (大脑皮层) while they sleep: The skill probably fades in the course of the first years of life, she adds so forget the idea that you can pick up the tricky French vowels as an adult just by slipping a language tape under your pillow. But while it may not help grown-ups, Cheour is hoping to use the sleeping hours to give remedial help to babies who are genetically at risk of language disorders. If an adult wants to learn a language faster, he can put a language tape under his pillow. 【单选题】

A.Right

B.Wrong

C.Notmentioned

正确答案:B

答案解析:这个命题是错误的。文章最后一段有“The skill probably fades in the course of the first years of life, she adds so forget the idea that you can pick up the tricky French vowels as an adult just by slipping a language tape under your pillow. But while it may not help grown-ups”，这些话都是对本题的否定。

2、The courageous hay has been the subject of massive media coverage.【单选题】

A.extensive

B.continuous

C.instant

D.quick

正确答案:A

答案解析:这个勇敢的男孩成为了媒体大幅报道的对象。本题难度不大，干扰项干扰不强。m assive和extensive都可指“大量的”，其他项和答案意义差异较大，最佳答案是A。

3、About one million Americans are diagnosed annually with skin cancer.【单选题】

A.every year

B.severely

C.actively

D.every month

正确答案:A

答案解析:题干大意：每年大约有100万美国人被诊断为皮肤癌。画线词annually：每年。选项中，every year：每年。severely：严重的。如：The report says the drugs had meaningful results only in the most severely depressed patients. 这个报告指出药物只是对于最严重的抑郁症患者有显著效果。actively：积极地。如：Just as a rider\'s weight shifts can help sustain the equilibrium of a wobbly bicycle, actively balancing the lift forces on each wingtip is key to aircraft roll control. 骑自行车的人移动重心有助于稳定摇晃的自行车，就飞机而言也一样，要控制转动动作，关键就在于主动平衡左右翼尖的升力。

4、The minimum age of Chinese citizens who are eligible to vote is eighteen. 【单选题】

A.encouraged

B.enforced

C.entitled

D.expected

正确答案:C

答案解析:encouraged:被鼓励的、受到鼓舞的；enforced:受强迫的、被迫的；entitled:授权的、有资格的，和句子中的eligible意思相同；expected：受到期待的、被期望的、所预期的。

5、Arctic MeltEarth\'s North and South Poles are famous for being cold and icy. Last year, however, the amount of ice in the Arctic Ocean (北冰群) fell to a record low.Normally, ice builds in Arctic waters around the North Pole each winter and shrinks(缩小) during the summer. But for many years, the amount of ice left by the end of summer has been declining.Since 1979, each decade has seen an 11.4 percent drop in end of summer ice cover. Between 1981 and 2000, ice in the Arctic lost 22 percent of its thickness, becoming 1.13 meters thinner.Last summer, Arctic sea ice reached its thinnest levels. By the end of summer 2007, the ice had shrunk to cover just 4.2 million square kilometers. That\'s 38 percent less area than the average cover at that time of year. And it\'s a very large 23 percent below the previous record low, which was set just 2 years ago. This continuing trend has made scientists concerned to.There may be several reasons for the ice melt, says Jinlun Zhang, an oceanographer (海洋学家)at the University of Washington in Seattle. Unusually strong winds blew through the Arctic last summer. The winds pushed much of the ice out of the central Arctic, leaving a large area of thin ice and open water.Scientists also suspect that fewer clouds cover the Arctic now than in the past. Clearer skies allow more sunlight to reach the ocean. The extra heat warms both the water and the atmosphere. In parts of the Arctic Ocean last year, surface temperatures were 3.57 Celsius warmer than the average and 1.5c warmer than the previous record.With both air and water getting warmer, the ice is melting from both above and below. In some parts of the Beaufort Sea, north of Alaska and western Canada, ice that measured 3.3 meters thick at the beginning of the summer was measured just 50 cm by season\'s endThe new measurements suggest that melting is far more severe than the thinking of scientists. Some scientists fear that the Arctic is stuck in a warming trend.It can be learned from the last sentence that ______.【单选题】

A.the ice melt in the Arctic may never stop

B.scientists are trying hard to stop the ice melt in the Arctic

C.scientists are delighted to find out what is going on in the Arctic

D.the warming trend in the Arctic can be reversed in the near future

正确答案:A

答案解析:本题难度不大，最后一句话的句意不难理解。文章最后一句谈到，科学家们担心北极处于变暖趋势，而且不能挽回，答案是B。