2024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、What Do Dreams Tell Us?Why do we dream? Do dreams have meanings? These are questions which have troubled man fｏｒthousands of years. The oldest surviving book on the interpretation of dreams is Egyptian ａｎｄ　is nearly 4,000 years old. In ancient Greece, it was thought that people who were ill could be cured by telling their dreams. They would relate their dreams to their doctors who would tell them what they meant ａｎｄ　then give them medicine to make them well. The ancient Chinese believed that if a pregnant woman dreamed of a bear, she would have a son, ａｎｄ　if she dreamed of a snake, she would have a daughter. There are many stories about dreams foretelling (预言) the future.We certainly do not now believe that dreams foretell the future. Most scientists believe that dreams are based on events in our own life ａｎｄ　on our feelings. The events are usually very recent, mostly within the last two days. Our emotions, on the other hａｎｄ　our wishes, hopes ａｎｄ　fears may go back many years, even to early childhood.In a dream, events are altered. A dream may contain parts of many real-life events. Most importantly, something that cannot be shown directly may be shown indirectly. Fｏｒexample, you might dream of driving a large car. This could mean not that you want to have a larger car, but that you desire power, ａｎｄ　maybe you want to control other people. Again, you may dream that you are an actｏｒin a play. The play is about to start, but you have completely forgot your lines. This dream may seem strange because you are not interested in acting, ａｎｄ　you never want to be in a play. But the dream may mean that you have some other problem that you feel is too difficult fｏｒyou to solve.Psychologists believe that dreams may be helpful to us. Indeed, people who have been allowed to sleep in experiments, but not allowed to dream, have become anxious ａｎｄ　restless. ａｎｄ　when they are later allowed to sleep as much as they like, they dream more than ever to make us fｏｒthe lost "dream time".When people are not allowed to dream during sleep, they become ______.【单选题】

A.power

B.quiet ａｎｄ　happy

C.events

D.experiments

E.diseases

F.worried ａｎｄ　nervous

正确答案:F

答案解析:根据题干线索词be allowed to dream定位原文至第四段第二句：Indeed, people who have been allowed to sleep in experiments, but not allowed to dream, have become anxious ａｎｄ　restless. 题干部分对该句进行了同义改写，由此推断，所需添加成分为句中画线部分。而F选项worried ａｎｄ　nervous（紧张不安的）属于对该部分的同义改写，故F为正确答案。

2、Cell Phone Lets Your Secret OutYour cell phone holds secrets about you. Besides the names ａｎｄ　numbers that you\'ve programmed into it, traces of your DNA linger on the device, according to a new study.DNA is genetic material that appears in every cell. Like your fingerprint, your DNA is unique to you- because you have an identical twin. Scientists today routinely analyze DNA in blood, saliva, ｏｒhair left behind at the scene of a crime. The results often help detectives identify criminals ａｎｄ　their victims. Your cell phone can reveal more about you than you might think.Meghan J. McFadden, a scientist at McMaster University in Hamilton, Ontario, heard about a crime in which the suspect bled onto a cell phone ａｎｄ　later dropped the device. This made her wonder whether traces of DNA lingered on cell phones even when no blood was involved. So she ａｎｄ　colleague Margaret Wallace of the City University of New York analyzed the flip open phones of 10 volunteers. They used swabs to collect invisible traces of the users from two parts of the phone: the outside, where the user holds it, ａｎｄ　the speaker, which is placed at the user\'s ear.The scientists scrubbed the phones using a solution made mostly ______ alcohol. The aim of washing was to remove all detectable traces of DNA. The owners got their phones back fｏｒanother week. Then the researchers collected the phones ａｎｄ　repeated the swabbing of each phone once more.The scientists discovered DNA that belonged to the phone\'s speaker on each of the phones. Better samples were collected from the outside of each phone, those swabs also picked up DNA that belonged to other people who had apparently also handled the phone. Surprisingly, DNA showed up even in swabs that were taken immediately after the phones were scrubbed. That suggests that washing won\'t remove all traces of evidence from a criminal\'s device. So cell phones can now be added to the list of clues that can clinch a crime scene investigation.【单选题】

A.of

B.up

C.on

D.into

正确答案:A

答案解析:be made of是固定搭配，意即：由……制成。a solution made mostly of alcohol：一种主要由酒精制成的溶液。

3、Medicine depends on other fields fｏｒbasic information, particularly some of their specialized branches. 【单选题】

A.conventionally

B.obviously

C.especially

D.inevitably

正确答案:C

答案解析:particularly和especially同义，尤其是；conventionally:按照惯例；inevitably:不可避免地；obviously:明显地。

4、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 _____ 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 colｏｒdisappears. 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.results

B.rules

C.tools

D.methods

正确答案:A

答案解析:本题难度不大，考查的是词义辨析。很明显，文章此处的意思是“结果”，答案是A。

5、Eventually, she got a job ａｎｄ　moved to London.【单选题】

A.Certainly

B.Luckily

C.Naturally

D.Finally

正确答案:D

答案解析:最终，她找到工作搬到伦敦去了。本题难度不大，是送分题，干扰项干扰不强，eventually和finally都指“最后，最终”，不难找到答案D。