2023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、Seeing Red Means Danger AheadThe colｏｒred often means danger ａｎｄ　by paying attention, accidents can be prevented. In the future, the colｏｒred also may help prevent danger at construction sites. Thanks to new work by engineers, bridge supports ｏｒother kinds of materials, could one day contain a colｏｒ- changing material. It will turn red before a structure collapses ｏｒfalls apart.The secret behind the colｏｒ- changing material is a particular type of molecule (分子). A molecule is aｇｒｏｕｐof atoms (原子) held together by chemical bonds. Molecules come in all shapes ａｎｄ　sizes ａｎｄ　make up everything you can see, touch ｏｒfeel. How a molecule behaves depends on what kinds of atoms it contains ａｎｄ　how they\'re held together.When a polymer (聚合物) containing a colｏｒ- changing molecule called a mechanophore (机械响应性聚合物) is about to break, it produces a color. When a polymer with mechanophore molecules becomes "injured" ｏｒweak, one of the mechanophore bonds breaks ａｎｄ　the material turns red. "It\'s a really simple detection method," says Nancy Sottos, one of the scientists who worked on the project. Sottos ａｎｄ　her team tested the colｏｒ- changing polymers in their lab. The test results proved encouraging.There is a way to get rid of the red colｏｒlight. When a bright light is shone on the mechanophore, the broken bond is fixed ａｎｄ　the red colｏｒ_____. Thus "self - healing" may be a problem fｏｒengineers. They need to use the colｏｒ- changer in big construction projects that will be outside, under sunlight. ａｎｄ　sunlight will make the mechanophore\'s warning system useless.Sottos ａｎｄ　her fellow scientists still have a lot of work to do before the colｏｒ- changing molecules can be used outside the lab.【单选题】

A.repairs

B.controls

C.finishes

D.disappears

正确答案:D

答案解析:本题有一·定难度，关键在理解好文章上下文意义，文章此处是说“红色消失了”，答案是D。

2、English ａｎｄ　English Community1 There is no doubt that English is a useful language. The people who speak English today make up the largest speech community in the world with the exception of speakers of Chinese. 2 A speech community is similar to other kinds of communities. The people who make up the community share a common language. Often they live side by side, as they do in a neighborhood, a village, ｏｒa city. More often they form a whole country. National boundaries, however, are not always the same as the boundaries of a speech community. A speech community is anyｇｒｏｕｐof people who speak the same language no matter where they happen to live. 3 We may say that anyone who speaks English belongs to the English speech community. Fｏｒconvenience, we may divide the speakers into two groups: one in which the speakers use English as their native language, the other in which the speakers learn English as a second language fｏｒthe purpose of education, commerce, ａｎｄ　so on. 4 Learning a second language extends one\'s vision ａｎｄ　expands the mind. The history ａｎｄ　literature of a second language record the real ａｎｄ　fictional lives of people ａｎｄ　their culture; a knowledge of them adds to our ability to understａｎｄ　ａｎｄ　to feel as they feel. Learning English as asecond language provides another means of communication through which the window of the entire English speech community becomes a part of our heritage. People who live in different places may belong to____. 【单选题】

A.a second language

B.the same language

C.the same speech community

D.any other language

E.national boundaries

F.a part ofone\'s heritage

正确答案:C

答案解析:从文章第2段可知，居住在不同地区的人们有可能同属一个speech community。

3、Arctic MeltEarth\'s North ａｎｄ　South Poles are famous fｏｒbeing cold ａｎｄ　icy. Last year, however, the amount of ice in the Arctic Ocean fell to a record low. Normally, ice builds in Arctic waters around the North Pole each winter ａｎｄ　shrinks during the summer. But fｏｒmany years, the amount of ice left by the end of summer has been declining. Since 1979, each decade has seen an 11. 4 percent ｄｒｅｐin 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 skimpiest levels yet. 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 ｓｅｔjust 2 years ago. This continuing trend has scientists concerned. There may be several reasons fｏｒthe ice melt, says Jinlun Zhang, an oceanographer at the University of Washington at 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 3.5℃ warmer than average ａｎｄ　1.5℃ warmer than the previous record high. 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 measured just 50 centimeters by season\'s end. The new measurements suggest that melting is far more severe than scientists have seen by just looking at ice cover from above, says Donald K. Perovich, a geophysicist at the U. S. Army Cold Regions Research ａｎｄ　Engineering Laboratory in Hanover, N. H. Some scientists fear that the Arctic is stuck in a warming trend from which it may never recover. What can be a possible title fｏｒthe passage?【单选题】

A.What are scientists looking fｏｒin the Arctic Ocean?

B.What are scientists doing in the Arctic Ocean?

C.Why are scientists worrying about the Arctic Ocean?

D.Why are scientists interested in the Arctic Ocean?

正确答案:C

答案解析:本文讲述了科学家们担心气温上升、冰川融化，最后一句话体现了主旨，所以选C。

4、Sharing SilenceDeaf teenagers Orlando Chavez ａｎｄ　German Resendiz have been friends since kindergarten (幼儿园). Together the two boys, who go to Escondido High School in California, have had the difficult job of learning in schools where the majority of the students can speak ａｎｄ　hear.Orlando lost his hearing at the age of one. German was born deaf, ａｎｄ　his parents moved from Mexico to find a school where he could learn sign language. He met Orlando on their first day of kinder garten."We were in a special class with about 25 other deaf kids," German remembered. "Before then, I didn\'t know I was deaf ａｎｄ　I was different.""Being young ａｎｄ　deaf in regular classes was very hard," signs Orlando. "The other kids didn\'t understａｎｄ　us ａｎｄ　we didn\'t understａｎｄ　them. But we\'ve all grown up together, ａｎｄ　today, I\'m popular because I\'m deaf. Kids try to communicate with me."Some things are very difficult fｏｒthe two boys. "We can\'t talk on the phone, so if we need help, we can\'t call an emergency service," German signs. "ａｎｄ　we can\'t ｏｒｃｅｒfood in a drive - thru."Despite of their difficulties, the two boys have found work putting food in bags at a local supermarket.They got their jobs through a "workability" program, designed fｏｒteenagers from local schools with different types of learning disabilities.German has worked in the supermarket since August, ａｎｄ　Orlando started in November."The other people who work here nave been very nice to us," Orlando signs. "They even sign sometimes. At first, we were nervous, but we\'ve learned a lot ａｎｄ　we\'re getting better."The opportunity to earn money has been exciting, both boys said. After high school, they hope to attend the National Technical Institute fｏｒthe Deaf in New York.According to the passage, the difficulty fｏｒOrlando ａｎｄ　German is that ______.【单选题】

A.they can\'t communicate with their classmates

B.they are not allowed to talk on the phone

C.they can\'t ｏｒｃｅｒfood in a drive - thru

D.they are not supposed to use emergency services

正确答案:C

答案解析:本题有一定难度，针对第五段出题，跳跃性比较大，但只要回文章定好位，找到答案依据不难。根据题干提示词汇迅速到文章定位。找到文章第五段。第五段谈到，German抱怨说，他们无法在电话里交谈，如果他们需要帮助，也无法呼叫紧急救助，而且他们也不能在汽车餐厅订餐，回来看选项，C项谈到了两人的困难，是正确答案。

5、My father is a physician. 【单选题】

A.researcher

B.professor

C.doctor

D.student

正确答案:C

答案解析:physician：内科大夫；doctor：大夫。是内科大夫必然是大夫，因此用doctor替换physician对句子的意义没有太大的影响。researcher研究者；professor教授；student学生。