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专家解题:2012年职称英语考试理工类A级概括大意与完成句子真题及答案解析2

来源:北京赛车投注 发布时间:2014-08-29

本文地址:http://www.100108.net/kaoshi-149-154918-1.html
文章摘要:专家解题:2012年职称英语考试理工类A级概括大意与完成句子真题及答案解析2,没事,国内联赛冠军是不会有意外的,梅稀依然是历史第一人,碾压三罗。裁判最后强行给勇士一次进攻机会,以及第几节库里的几次体毛级犯规,联盟果然照顾勇士,骑士。标题怎么不这样写:半场火箭势头凶猛,气势一直在火箭这边,但却没有领先勇士。,骑士今天赢了,请你发自内心的说一次这是联盟内定的,真的,请你发自内心的说一次。临场发挥确实不好胜败乃兵家常事我倒觉得没什么。今年看看红军吧真心不错。博格巴的身价和能力本身就有很大的炒作成分,足球场上有无数的天才,但真正能踢出来的天才真的没几个。。

  考题类型:概括大意与完成句子
  

Learn about Noble Gases(惰性气体)

1    Have you ever ridden on aballoon? Many tourist spots offer balloon rides in order for people to see thebeauty of a place from above. A balloon contains a noble gas called helium(氦). Formerly, balloons containedhydrogen but hydrogen is very flammable and dangerous when uncontrolled.Therefore, people shifted to helium, which is safer. Helium is safe because ithas the properties of the noble gases.

2    People once believed thatnoble gases couldn’t chemically react at all. For this reason, they were called inertgases(惰性气体). Theywere also listed under Group 0 inthe old periodic table because scientists believed that the gases have zerovalence(价) electronsin their outer shell. This was later proven to be untrue when some noble gascompounds were discovered.

3   The gases are elements,which share similar properties. These properties include being monoatomic,colorless, odorless, being able to conduct electricity, and having low chemicalreactivity. Noble gases include Helium, Neon, Argon, Krypton, Xenon and Radon.These are all found in Group 18, in the rightmost column of the periodic table.If you look at the periodic table, you will notice that these elements are theonly ones, which do not have a charge. Helium has the lowest molecular(分子的) weight while Radon is theheaviest.

4   Remember that chemicalreactions occur because atoms have valence electrons, which are electrons intheir outer shell. When the outer shell is “unfilled” or the required number ofelectrons is not yet complete, the atom is more reactive. Noble gases have afull outer shell, meaning that they have complete electrons in their outershell. This complete number varies. For instance, the outer shell of Helium has2 valence electrons while the outer shell of Xenon has 8 electrons. Nowadays,there remains to be a few noble gases because of the low chemical reactivity ofthese said gases.

5    Because of theirproperties, noble gases have many important applications. They are widely usedin medicine and industries. For instance, Liquid Helium is used forsuperconducting magnets(磁体). These magnets are very important in physics and medicine. When adoctor suspects that a person’s brain has been damaged, he might request forMagnetic Resonance Imaging (MRI). MRI allows the doctor to “see” the brain,without operating on the patient.

-

27. Noble gases are not very chemically______.

A. unnecessary  

B. complete  

C. lightest  

D. important    

E. flammable  

F. reactive

  专家解题: 

第一步:首先看有没有可以帮助我们解题的语法结构。本题目要选择的是一个能被副词chemically修饰的词,北京赛车投注:也就是动词或形容词。所有选项都符合条件。所以使用查读法进行解题。确定题干中的信息词为:chemically。

第二步:利用信息词,我们直接回归原文的第二段第一句:Peopleonce believed that noble gases couldn’t chemically react at all.

第三步:对比题干和原文。原文中chemically修饰的是动词react,而选项中出现了该单词的形容词形式reactive,所以,本题的答案应该是选项F。该题主要的解题思路就是通过信息词回归以后,找到原文和题干内容的同义改写。

28. Among the elements of noble gases Helium is the____.

A. unnecessary  

B. complete  

C. lightest  

D. important    

E. flammable  

F. reactive

  专家解题: 

第一步:首先看有没有可以帮助我们解题的语法结构。本题目要选择的是一个能被定冠词the修饰的名词或最高级。选项中满足这个要求的只有选项C的lightest。The+形容词最高级表达形式。所以,本题的答案是选项C。该题主要的解题思路就是通过冠词the的用法来进行排查和确定答案的。

29. The required number of electrons in noble gases’ outer shell is_____.

A. unnecessary  

B. complete  

C. lightest  

D. important    

E. flammable  

F. reactive

  专家解题: 

第一步:首先判断出没有可以帮助我们解题的语法结构。所以使用查读法进行解题。确定题干中的信息词为:The required number of electron,outer shell。

第二步:利用信息词,我们直接回归原文的第四段前半部分:Rememberthat chemical reactions occur because atoms have “valence” electrons, which are electrons in their outer shell. When the outershell is “unfilled” or the required number ofelectrons is not yet complete, the atom is more reactive.

第三步:对比题干和原文。选项B的complete出现在原文中,所以,本题的答案应该是选项B。

30. MRI may make operating on the patient ______.

A. unnecessary  

B. complete  

C. lightest  

D. important    

E. flammable  

F. reactive

  专家解题:

第一步:首先判断出有没有可以帮助我们解题的语法结构。题干中涉及到单词make的用法,即:使某人/某事怎么样,这里是:使得病人身上的手术____。不能根据这个判断出答案,所以快速确定题干的信息词为:MRI,operating on the patient。

第二步:利用信息词,我们直接回归原文的最后一段后半部分:When adoctor suspects that a person’s brain has been damaged, he might request for Magnetic ResonanceImaging (MRI). MRI allows the doctor to “see” the brain,without operating on the patient.

第三步:对比题干和原文。原文中说的是without operatingon the patient,也就是不用在病人身上做手术,选项中,A选项的unnecessary是没用的意思,也就是:使得病人身上的手术没用,符合原文的意思,所以,本题的答案应该是选项A。

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