职称英语理工类b级,2017职称英语理工类C级辅导练习题(8)

　2017年职称英语理工类C级辅导练习题(8)

　　Sharks Perform a Service for Earth’s Waters

　　It is hard to get people to think of sharks as anything but a deadly enemy1. They are thought to 1 people frequently. But these fish2 perform a 2 service for earth's waters and for human beings. Yet business and sport fishing3 are threatening their 3 Some sharks are at risk of disappearing from 4

　　Warm weather may influence both fish and shark activity. Many fish swim near coastal areas 5 their warm waters. Experts say sharks may follow the fish into the same areas, 6 people also swim. In fact, most sharks do not purposely charge at or bite humans. They are thought to mistake a person 7 a sea animal, such as a seal or sea lion. That is why people should not swim in the ocean when the sun goes down or comes up. Those are the 8 when sharks are looking for food. Experts also say that bright colors and shiny jewelry may cause sharks to attack.

　　A shark has an extremely good sense of smell4. It can find small amounts of substances in water, such as blood, body liquids and 9 produced by animals. These powerful 10 help sharks find their food. Sharks eat fish, any 11 sharks, and plants that live in the ocean.

　　Medical researchers want to learn more about the shark’s body defense, and immune 12 against disease. Researchers know that sharks 13 quickly from injuries. They study the shark in hopes of finding a way to fight human disease.

　　Sharks are important for the world’s 14 . They eat injured and diseased fish. Their hunting activities mean that the numbers of other fish in ocean waters do not become too 15 . This protects the plants and other forms of life that exist in the oceans.

　　注释：

　　1.It is hard to get people to think of sharks as anything but a deadly enemy：要让人们相信鲨鱼不是(人类的)死敌不是一件容易的事。 anything but意为“决不，远非”，如： His performance in London is anything but a success.(她在伦敦的演出完全不成功。)

　　2.these fish：这些鱼(指鲨鱼)。 fish单复数同形，如： one fish，two fish，many fish(见第二段第一句)。

　　3.sport fishing：捕鱼运动。

　　4.sense of smell：嗅觉

　　练习:

　　1. A attack B meet C love D visit

　　2. A terrible B eatable C valuable D possible

　　3. A source B existence C friends D fish

　　4. A Space B Sky C Land D Earth

　　5. A because B since C because of D by reason that

　　6. A whose B which C that D where

　　7. A to B for C like D with

　　8. A times B places C seas D oceans

　　9. A sciences B mathematics C chemicals D physics

　　10. A feelings B senses C touches D tastes

　　11. A those B these C another D other

　　12. A systems B processes C ideas D circles

　　13. A recover B reform C return D rely

　　14. A rivers B oceans C forests D mountains

　　15. A weak B little C few D great

　　答案与题解：

　　1.A 本题应选择 attack，因为第一句说到：人们认为鲨鱼是 a deadly enemy，也就是说鲨鱼会对人类造成伤害。第二句是对 deadly enemy的具体说明。其他的三个选项 meet，love，visit都不合适， love与上下文意思相反， meet和 visit与上下文意思不符。

　　2.C 空格 2所在的句子由 but连接，所以该句子表达的意思一定与第二句相反。第二句对鲨鱼的评价是负面的，填入空格 2的词应该是正面的。四个选项中只有 valuable符合这一条件，所以是答案。

　　3.B 第三句说到鲨鱼有益于 “waters and human beings”，第五句又说到鲨鱼濒临灭绝的危险。根据上下文的意思，threatening(威胁)到它们的应该是 existence(生存)。其他的三个选项 source，friends，fish都不合适，与上下文意思没有联系。

　　4.D 如果鲨鱼消失，从什么地方消失呢 ?当然从 earth(地球)上消失。从 space(宇宙空间)、 sky(天空)

　　中消失，或从 land(陆地)上消失，都有悖常理。

　　5.C 四个选项的意思都是 “因为“，但是从用法上分析， because、since和 by reason that之后要接句子， because of之后接名词或名词短语。 their warm waters是名词短语，所以要选用 because of。

　　6.D “… people also swim”明显是定语从句，其先行词是表示地点的名词 area，所以要选关系副词 where。

　　7.B 从上下文判断，本句的意思是：鲨鱼将人错认为是海洋动物。而“将……错认为是 ”的英语表达是 mistake … for，所以本题的答案是选项 B。

2017职称英语理工类C级辅导练习题(8).doc

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