第4部分：阅读理解(第31~45题，每题3分，共45分)

　　下面有3篇短文，每篇短文后有5道题，每题后面有4个选项。请仔细阅读短文并根据短文回答其后面的问题，从4个选项中选择1个最佳答案涂在答题卡相应的位置上。

　　第一篇 Mobile Phones

　　Mobile phones should carry a label if they proved to be a dangerous source of Fadiation．according to Robert Bell，a scientist．And no more mobile phone transmitter towers(发射塔)

　　should be built until the long．term health effects of the electromagnetic radiation they emit(放射)is scientifically evaluated．he said．"Nobody's going to drop dead overnight but we should be asking for more scientitic information．"Robert Bell said at a conference on the health effecfs of low-1evel radiation．"If mobile phones are found to be dangerous．they should carry a warning label until proper shields can be devised．"he said．

　　A report widely circulated(传播)among the public says that up to now scientists do not really know enough to guarantee there are no ill effects on humans from electromagnetic radiation．According to Robert Bell，there are 3.3 million mobile phones in Australia alone and they are increasing by 2，000 a day．By the year 2000 it is estimated that Australia will have 8

　　million mobile phones：nearly one for every two people．

　　As well，there are 2，000 transmitter towers around Australia，many in high density(密度) residential areas．For example,Telstra，Optus and Vodaphone build their towers where it is geographically suitable to them and disregard the need of the community．The electromagnetic radiation emitted from these towers may have already produced some harmful effccts on the health of the residents nearby．

　　Robert Bell suggests that until more research is completed the Govemment should ban construction of phone towers from within a 500 meter radius (半径)of school grounds，child care

　　centers，hospitals，sports playing fields and residential areas with a high percentage of children．He says there is emerging evidence that children absorb low．1evel radiation at a rate more than three times that of adults．He adds that there is also evidence that if cancer sufierers are subjected to electromagnetic waves the growth rate of the disease accelerates(提高)．

　　Robert Bell calls on the major telephone companies to fund adequate research and urges(敦促)the Government to set up a wide ranging inquiry into possible health effects．

　　31 According to Robert Bell，if mobile phones prove to be dangerous to people's health，

　　A they should be banned immediately．

　　B the use of them should be restricted．

　　C all transmitter towers should be torn down．

　　D a warning label should be attached．

　　32 How many mobile phone users will there be in Australia by the year 2000，according to the passage?

　　A 3.3 million．

　　B Almost half of the population．

　　C One third of the population．

　　D One fourth of the population．

　　33 Many transmitter towers were built

　　A on high mountains．

　　B in places suitable to the phone users.

　　C in areas which can take in radiation．

　　D in densely populated areas．

　　34 Who absorb low-1evel radiation at a higher rate than the others?

　　A Children．

　　B Men．

　　C Women．

　　D Old people．

　　35 This article mainly argues that

　　A the Goverdnment should restrict the number of mobile phone users.

　　B mobile phones may have ill effects on people.

　　C mobile phones have proved to be harmless to people's health.

　　D no more phone towers should be constructed.