题目内容
8.Have you ever noticed that your fingertips are winked when you've just finished swimming or washing dishes?It seems as if your hands have aged 30years i a second.But is this an accident?Or is it something that nature has built into our bodies?If your finger's wrinkling up had no use at all,"it wouldn't need to."Professor Tom Smulders from Newcastle University,UK,told BBC News.By studying wet fingers closely,Smulders and his partners found that the wrinkles looked a bit like the patterns on the car tire or o the bottom of the running shoes.So they made a guess that wrinkles on fingers might be able to help the hand hold things more tightly.
To testthis,researchers asked 20people to pick up marbles from water with their hands.But before they started,some of the people had to keep their hands in water for half an hour.
The researchers found that the people with wrinkled fingers completed the task the task faster than those with dry hands.But when they were asked to move dry marbles,all the people performed equally well,no matter they had the wrinkled fingers or not.
Our ancestors might not have played with marbles,but wrinkled fingers could have made it easier for them to climb around in the wet forests and catch fish from rivers,researchers say.
Similarly,our toes also get wrinkled in water.This may have developed from our ancestor's need to run on wet ground.
But the question is,if wrinkled fingers are so helpful,why don't our hands just stay that way all the time?Researchers explained that wrinkling has its disadvantage:wet fingertips are far less sensitive than smooth ones,reducing our sense of touch.
26,What does the underlined world"this"in the third paragraph refer to?B
A.Wether fingers have wrinkles after they are put in water.
B.Wether wrinkled fingers can hold things more tightly.
C.Why keeping things in water makes them wrinkled.
D.Why wrinkles help hands hold things more tightly.
27,The test shows thatC.
A.winkled hands hold dry things more tightly than dry hands do.
B.dry hands hold dry things more tightly than wrinkled hands do.
C.winkled hands hold wet things more tightly than dry hands do.
D.dry hands hold wet things more tightly than wrinkled hands do.
28.What might be the disadvantage of wrinkled fingers?D
A.They are too sensitive to be touched.
B.They might be more likely to get hurt.
C.They cannot hold things tightly enough.
D.They are not so sensitive as dry fingers.
分析 短文大意:
这篇短文主要通过一个小实验说明了手指的皮肤起皱对于我们把握东西的好处,其好处就在于手指上的皱纹可以让我们握东西时更紧,这个已经通过实验证实了,有皱纹的手更容易握紧湿的东西.
同时也指出了这一生理现象的不足之处,那就是感觉不太灵敏了,在很大程度上降低了我们的触感.
解答 26.B,推理判断题,联系上一段中最后一句话描述,"So they made a guess that wrinkles on fingers might be able to help the hand hold things more tightly."猜想手指上的皱纹可以让我们握东西时更紧,可知此处this指的是,起皱的手指是否能更紧地抓住东西这个猜想.故选B.
27.C,推理判断题,根据第四段The researchers found that the people with wrinkled fingers completed the task the task faster than those with dry hands.描述,可知有皱纹的手更容易握紧湿的东西,所以选C.
28.D,推理判断题,根据最后一段Researchers explained that wrinkling has its disadvantage:wet fingertips are far less sensitive than smooth ones,reducing our sense of touch.描述,可知,有皱纹的缺点就在于感觉不太灵敏,很大程度上降低了我们的触感.可知选D.
点评 本文是一篇科普类文章.做题时要在理解好文意的基础上,与题目有机的结合,从文章中找到相关细节性的句子与选项细细比对,进行选择或推理判断,选出符合文章内容的正确选项.做题注意灵活,有时可采用排除法或直选法确定出最终答案.
She wished that he were as easy to please as her mother,who was aiways (17)C with all kinds of perfume (香水).Besides,shopping at this time of the year was a most (18)B job.People in shops (19)Bon your feet,pushed you with their shoulders and almost (20)Dyou over in their hurry in order to (21)Bsomething cheap ahead of you.
Party to have a rest,Edith paused in front of a counter,where some beautiful ties were on show."They are (22)Asilk"the shop assistant told her with a smile trying to (23)D her to buy one.But Edith knew from past (24)Athat her choice of ties hardly ever pleased her father.
She moved on slowly and then,quite by chance (25)Awhere a small crowd of men had gathered round a counter.She found some fine pipes on sale and the (26)Cwere very beautiful Edith did not hesitate for long,(27)Aher father only smoked a pipe once in a while,she believed this was (28)Dto please him
When she got home,with her small but well-chosen present hidden in her handbag,it was time for supper and her parents were already (29)Dtable.Her mother was in great excitement.'Your father has at last decided to stop smoking,"she told her daughter happily.Edith was very (30)C.She could not say a single word.
| 16.A.stocking | B.card | C.tree | D.gift |
| 17.A.tired | B.mad | C.satisfied | D.familiar |
| 18.A.unhappy | B.careful | C.exciting | D.boring |
| 19.A.walked | B.stepped | C.landed | D.stood |
| 20.A.turned | B.rolled | C.covered | D.knocked |
| 21.A.watch | B.find | C.grasp | D.sell |
| 22.A.real | B.cheap | C.poor | D.exact |
| 23.A.order | B.sak | C.force | D.advise |
| 24.A.experience | B.experiment | C.knowledag | D.education |
| 25.A.stopped | B.left | C.started | D.remained |
| 26.A.models | B.colors | C.shapes | D.materials |
| 27.A.because | B.since | C.although | D.unless |
| 28.A.luckily | B.impossibly | C.possibly | D.certainly |
| 29.A.on | B.by | C.beside | D.at |
| 30.A.glad | B.happy | C.surpised | D.excited. |