19.Are you happy with your teeth?Becca,a 15-year-old girl from the US is not.She decided her teeth needed to be whiter."They weren't that bad,but I wanted to make them all the same colour",she said.
In the last five years,teeth whitening has become very popular among young Americans.Now the trend (潮流) has come to China.If you turn on the TV you can see the Hong Kong pop star Karen Mok showing her bright white teeth,saying,"want to be like me?Use white teeth strips (牙貼)!"You may even have decided to buy one.
But wait a minute.Dentists have something to say.They think that kids should not use whitening products until they are 16or even older.
"We don't know what will happen yet,"says Dr.Nasrin Azim,a dentist in Chicago."Studies have not been done on young people.I wouldn't do teeth whitening on anyone under 18."
The problem with whitening lies in the pulp (牙髓),the innermost (最深處的) part of the tooth.It has the tooth's nerve (神經(jīng)) ending.When we eat very hot or cold things,it's the pulp that hurts.Kids have larger pulps.The larger pulp might make teeth more sensitive (敏感的) to whitening and get hurt.
Another problem is that the gums around the teeth usually change shape (形狀) with age.So,if someone whitens his or her teeth during childhood,the darker,natural colour might show later around the gum line.At that time,your teeth will show two colours.And the darker colour is difficult to whiten.
So,wait another few years before you make your teeth whiter.Or if you really want to do it,ask your dentist.They'll give you useful advice.
61.This passage mainly talks aboutD.
A.how to whiten your teeth
B.the new trend of whitening teeth
C.Americans with white teeth
D.dentists'advice on tooth whitening
62.The show done by Karen Mok is probably a(n)C.
A.notice
B.a(chǎn)nnouncement
C.a(chǎn)dvertisement
D.talk show
63.When we eat hot or cold food,the pulp hurts becauseC.
A.it is inside the teeth
B.it is sick
C.it is rich in nerves
D.it is not used to this kind of food
64.What may happen if children do tooth whitening according to dentists?A
A.Their teeth may show two colours later.
B.Their gums may change shape with age.
C.Their teeth may get darker.
D.They may lose their teeth.
65.We can infer from the passage thatB.
A.dentists like very much the idea of tooth whitening
B.more and more people in China will get their teeth whitened
C.it's necessary for children to whiten their teeth
D.tooth whitening will certainly bring good results for people.
分析 本文主要寫了把牙齒變白成為一種時尚,流行很受年輕人的喜歡,同時牙醫(yī)提出了一些令牙齒變白的一些建議.
解答 61.D 主旨大意題.把牙齒變白成為一種時尚,流行很受年輕人的喜歡,根據(jù)文中Dentists have something to say,牙醫(yī)有話說,牙醫(yī)提出了一些令牙齒變白的一些建議,所以答案選D.
62.C 推理判斷題.根據(jù)句子If you turn on the TV you can see the Hong Kong pop star Karen Mok showing her bright white teeth,saying,"want to be like me?Use white teeth strips (牙貼)!"打開電視會看到香港明星展示自己白的牙齒,并說"想和我一樣嗎?請用增白牙貼",所以可以推斷出這是一則電視廣告,故答案選C.
63.C 細節(jié)理解題.根據(jù)句子Kids have larger pulps.The larger pulp might make teeth more sensitive (敏感的) to whitening and get hurt孩子的牙髓更大,牙髓越大,牙齒對美白的敏感性也就越高,所以答案選C.
64.A 細節(jié)理解題.根據(jù)句子if someone whitens his or her teeth during childhood,the darker,natural colour might show later around the gum line.At that time,your teeth will show two colours.如果有人能夠在他或她的童年增白牙齒,黑暗的,自然的顏色可能在后來在牙齦線顯示.那時,你的牙齒會顯示兩種顏色,所以答案選A.
65.B 推理判斷題.Now the trend (潮流) has come to China.增白牙齒這個潮流,現(xiàn)在的趨勢已經(jīng)來到中國,可以推斷未來中國會有越來越多的人增白牙齒,所以答案選B.
點評 閱讀理解題測試考生在閱讀基礎上的邏輯推理能力,要求考生根據(jù)文章所述事件的邏輯關系,對未說明的趨勢或結局作出合理的推斷;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.