6.Given that female bed bugs lay over 200eggs during their lifetime,it's not surprising that about one out of five American households have had or know someone who has had a bed bug infection.But a new study shows that an unexpected weapon may be useful in the fight against the tiny,biting enemies:color The BBC's Michelle Roberts reports that bed bugs appear to have strong preferences for certain colors.
A group of researchers became curious about whether bed bugs like certain colors,so they created tiny tents,or harborages of different colors and placed them in petri dishes(培養(yǎng)皿).The researchers then put bed bugs on the center of the dish,giving them ten minutes to choose which harborage they wanted to hide in.
Bed bugs are nest parasites(寄生蟲)-that's why they love human"nests,"or bedrooms.So they're crazy about finding shelter.As a result,it would make sense that a bug placed on the scary broadness of a petri dish would rush for cover as soon as possible.
Most of the bugs ran to black and red harborages,passing by ones of other colors.And they weren't into yellow or green at a11.Overall,the bugs preferred harborages in this order:red,black,orange,blue,lilac,violet and green.Gender influenced the decisions because groups of single-gender bugs preferred the same colors Researchers guess that the decisions may have to do with bugs'considering different shelters as better or worse places to mate or perhaps stay safe from enemies.
"We originally thought the bed bugs might prefer red because blood is red and that's what they feed on,"says Dr.Corraine McNeill"However,after doing the study,the main reason we think they prefer red colors is that bed bugs themselves appear red,so they go to these harborages because they want to be with other bed bugs,as they are known to exist in groups."
28.What did the research discover?A
A.Bed bugs are particular about certain colors.
B.Bed bugs have a preference for living in groups.
C.Bed bugs are difficult toget rid of.
D.Bed bugs are afraid of dark colors.
29.The word"harborages"in Para 2can be replaced by"D".
A.bed rooms
B.dishes
C.eggs
D.shelters
30.Bed bugs like red mainly becauseA.
A.they are red
B.red is beautiful
C.red can scare their enemies away
D.b1ood is red and they feed on blood
31.What colour sheet should people choose against bed bugs according to the research?B
A.Red.
B.Yellow.
C.White.
D.Black.
分析 本文主要寫了臭蟲與它喜歡的顏色的研究,通過研究讓人們了解臭蟲的習(xí)性,用床單的顏色就可以去除臭蟲.
解答 28.A 細節(jié)理解題.根據(jù)句子color The BBC's Michelle Roberts reports that bed bugs appear to have strong preferences for certain colors.英國廣播公司的Michelle Roberts報道,臭蟲似乎對某些顏色有強烈的偏好.
29.D 詞義猜測題.A group of researchers became curious about whether bed bugs like certain colors,so they created tiny tents,or harborages of different colors and placed them in petri dishes.一組研究人員開始對是否臭蟲喜歡某些顏色感到好奇,于是他們制造了了小小的帳篷,或harborages把臭蟲放在不同顏色的器皿中培養(yǎng). 可以推測harborages與小小的帳篷是并列的,應(yīng)該是培養(yǎng)臭蟲的場所,所以D選項shelters"庇護所"與之同義.
30.A 推理判斷題.the main reason we think they prefer red colors is that bed bugs themselves appear red,so they go to these harborages because they want to be with other bed bugs,as they are known to exist in groups."主要原因我們認為他們喜歡紅顏色是臭蟲自己是紅色,所以他們?nèi)ミ@些harborages因為他們想與其他的臭蟲在一起,因為它們想存在于群體."可以推斷出答案選A.
31.B 推理判斷題.根據(jù)句子And they weren't into yellow or green at a11.他們從來不進入黃色或者綠色,可以推斷出人們可以用黃色的或綠色的床單來驅(qū)趕臭蟲,所以答案選B.
點評 閱讀理解題測試考生在閱讀基礎(chǔ)上的邏輯推理能力,要求考生根據(jù)文章所述事件的邏輯關(guān)系,對未說明的趨勢或結(jié)局作出合理的推斷;或根據(jù)作者所闡述的觀點理論,對文章未涉及的現(xiàn)象、事例給以解釋.考生首先要仔細閱讀短文,完整了解信息,準確把握作者觀點.