2017年职称英语《理工A级》完形填空试题及答案

　　完形填空

　　text 1

　　Wonder Webs

Spider webs are more than homes, and they are ingenious traps. And the world’s best web spinner may be the Golden Orb Weaver spider. The female Orb Weaver spins a web of fibers thin enough to be invisible to insect prey, yet 1 enough to snare a flying bird without breaking.

The secret of the web’s strength? A type of super-resilient 2 called dragline. When the female spider is ready to 3 the web’s spokes and frame, she uses her legs to draw the airy thread out through a hollow nozzle in her belly. Dragline is not sticky, so the spider can race back and forth along 4 to spin the web’s trademark spiral.

Unlike some spiders that weave a new web every day, a Golden Orb Weaver 5 her handiwork until it falls apart, sometimes not for two years1. The silky thread is five times stronger than steel by weight and absorbs the force of an impact three times better than Kevlar, a high-strength human-made 6 used in bullet-proof vests. And thanks to its high tensile strength, or the ability to resist breaking under the pulling force called tension, a single strand can stretch up to 40 percent longer than its original 7 and snap back as well as new. No human-made fiber even comes 8 .

It is no 9 manufacturers are clamoring for spider silk. In the consumer pipeline: high-performance fabrics for athletes and stockings that never run2. Think parachute cords and suspension bridge cables. A steady 10 of spider silk would be worth billions of dollars — but how to produce it? Harvesting silk on spider farms does not 11 because the territorial arthropods have a tendency to devour their neighhors.

Now, scientists at the biotechnology company Nexia are spinning artificial silk modeled after Golden Orb dragline. The 12 step: extract silk-making genes from the spiders. Next, implant the genes into goat egg cells. The nanny goats that grow from the eggs secrete dragline silk proteins in their 13 . “The young goats pass on the silk-making gene without 14 help from us,” says Nexia president Jeffry Turner. Nexia is still perfecting the

spinning process, but they hope artificial spider silk will soon be snagging customers 15 the real thing snags bugs.

　　注释：

1. sometimes not for two years：相当于 sometimes it does not fall apart for two years

2. run：(编织物 )抽丝

　　练习：

1. A tough B soft C large D smooth

2. A cloth B silk C nylon D wool

3. A repair B pull C move D weave

4. A him B her C it D those

5. A refixes B reproduces C remakes D reuses

6. A metal B mass C material D model

7. A bredth B length C height D strength

8. A close B well C open D awake

9. A hurry B worry C wonder D use

10. A shipment B supply C run D exchange

11. A run B go C deal D work

12. A previous B foremost C first D front

13. A milk B meat C lungs D muscle

14. A no B any C some D many

15. A as fast as B as gently as C as fully as D as little as

　　答案与题解：

1. A flying bird飞入蜘蛛网时有股冲力，网线坚韧才能捕捉到它，所以选 tough。本句中的 without breaking也指示 tough。

2. B英语中蜘蛛网丝是 spider silk。见第三、第四段分别出现的 silky thread和 spider silk。

3. D 本句说蜘蛛织网的机制和过程，所以选， weave而且，这种蜘蛛就叫 Golden Orb Weaver。

4. C从上下文判断， along之后接的是 the dragline，其代词应为 it。

5. D 本句说 Golden Orb Weaver与某些种类的蜘蛛不同，它不用每天织新网，只要网不破，就能一直使用下去，有时一用 2年，所以选， reuses。

6. C本句将 Golden Orb Wesver蜘蛛网的牢度和张度与防弹衣材料 Kevlar对比，说明该蜘蛛网坚韧的程度。填入的词应该是 Kevlar的同位语， Kevlar是一种材料，所以选 material。

7. B除了上下文的意思要求填 length之外，本句中的用词 stretch和 longer都指示要用 length。

8. A come后面可接形容词。 come close意为“接近”。 come well，come open，come awake都能搭配，但意思与上下文配不上。

9. C It is no wonder (that)是“不足为奇，十分自然”的意思。只有选 wonder意思才连贯。

10. B从意义上判断， a steady supply是正确的选择。 shipment (运送)、run (运转)或 exchange(交换)的意思与上下文配不上。

11. D 上下文的意思要求用“起作用”这个词，英语 work在本句的词义是“起作用”。

12. C下一句是以 Next开始的。有 next，前面很可能有 first之类表次序的词。

13. A 常识告诉我们，把 dragline silk proteins分泌在 milk里，才容易分离出来，所以，选 meat，lungs或 muscle都是不合常理的。

14. B在 without之后要用 any，一般不用 some。英语不说 without no …， many不能修饰 help。

15. A 本题只能选 as fast as。若选 B、C 或 D，意思与上下文配不上。

　　text 2

　　Captain Cook Arrow Legend

It was a great legend while it lasted, but DNA testing has 1 ended a two-century-old story of the Hawaiian arrow carved from the bone of British explorer Captain James Cook 2 died in the Sandwich Islands1 in 1179.

“There is 3 Cook2 in the Australian Museum,” museum collection manager Jude Philip said not long ago in announcing the DNA evidence that the arrow was not made of Cook’s bone. But that will not stop the museum from continuing to display the arrow in its 4 , “Uncovered: Treasures of the Australian Museum,3” which 5 include a feather cape presented to Cook by Hawaiian King Kalani’opu’u in 1778.

Cook was one of Britain’s great explorers and is credited with 6 the “Great South Land,” 7 Australia, in 1770. He was clubbed to death in the Sandwich Islands, now Hawaii.

The legend of Cook’s arrow began in 1824 8 Hawaiian King Kamehamcha on his deathbed gave the arrow to William Adams, a London surgeon and relative of Cook’s wife, saying it was made of Cook’s bone after the fatal 9 with islanders.

In the 1890s the arrow was given to the Australian Museum and the legend continued 10 it came face-to-face with science.

DNA testing by laboratories in Australia and New Zealand revealed the arrow was not made of Cook’s bone but was more 11 made of animal bone, said Philp.

However, Cook’s fans 12 to give up hope that one Cook legend will prove true and that part of his remains will still be uncovered, as they say there is evidence not all of Cook’s body was 13 at sea in 1779. “On this occasion technology has won,4” said Cliff Thornton, president of the Captain Cook Society，in a 14 from

Britain. “But I am 15 that one of these days … one of the Cook legends will prove to be true and it will happen one day.”

1. A finally B firstly C lately D usually

2. A whose B who C which D what

3. A some B none C neither D no

4. A cinema B exhibition C shop D market

5. A must B did C has to D does

6. A discovering B visiting C travelling D using

7. A then B now C past D previously

8. A how B where C when D that

9. A conversation B fight C meal D dance

10. A however B until C after D whenever

11. A helpfully B usefully C likely D readily

12. A refuse B return C regain D reply

13. A collected B washed C stored D buried

14. A statement B suggestion C proposal D guess

15. A safe B weak C sure D lucky

　　答案与题解：

1. A第一段说 DNA鉴定的结论中止了流传二百年有关箭是用 Cook船长骨头制成的传说。根据这一层意思，选 finally是合适的。其他三个选项的词义都对不上号。

2. B Cook之后的从句是定语从句，替代 Cook的关系代词应该是 who。Whose也可替代 Cook，但是 whose是所有格，而定语从句中的关系代词用作主语，所以只能选 who。

3. D本段和其他有关段落都说到，澳大利亚博物馆没有用 Cook船长骨头制成的箭，所以本题只能选 no，不能选 some。None之后不能直接跟名词。 Neither一般与 nor成对连用。

4. B博物馆中不会把珍藏的' arrow陈列在 shop，market或 cinema，所以 exhibition是答案。

5. D does用在动向前表示强调 , does include的意思是“确实包括”。用 did不妥，因为主句的谓语用的是一般将来时 will not stop。 has to或 must也不妥，因为上下文的意思并没有要求用“必须” (must)或“不得不” (has to)。

6. A be credited with的意思是“把……归功于”，再联系到前面两次提到 Cook是伟大的 explorer，选项 A的 discovering是放恰当的选择。 Visiting，travelling和 using与 be credited with所表达的意思都搭不上。

7. B 从上下文判断， Cook发现的是当时称为 Great South Land，现在称为 Australia的那块大陆。 now是答案。注意，下句中桑伟奇群岛，现称夏威夷群岛，也用 now。then(当时)、past(过去的)或 previously(以前)意思与上下文表达的意思连接不上。

8. C 1824之后的定语从句是修饰表达时间概念 1824的，所以连接词要用关系副词 when。

9. B第三段提到 Cook是给乱棍打死的 (He was clubbed to death …)，所以选择 fight是很自然的。

10. B第五段主要的意思是“有关……的传说继续到……为止”，所以合适的选择是 until。

11. C本段表明 DNA鉴定的结论是：这支箭不是用 Cook的骨头制成的，接下去的意思是，这支箭很可能是用动物的骨头制成的。而 more likely是“很可能”的意思。其他三个选项的词义与本句表达的意思不匹配。

12. A 从上下文判断，只有选 refuse才符合原意。从语法上判断， refuse后面可接动词不定式。其他三个选项的同义与句子表达的意思不符。

13. D was buried at sea是“葬身海中”的意思。其他三个选项的词义与句子表达的意思不符。

14. A 本题从语义上只能选 statement(声明)。其他三个选项，即 suggestion(建议)、proposal(提议)与 guess (猜测)表达的意思与语境不符。

15. C本题要选 sure，表示 Cliff Thornton对 sure后面的 that从句表达的将要发生的事有信心，而 safe，weak或 lucky的词义与句子表达的意思不符。