Question

A. take off   B. mean     C. how   D. against      E. safely

Although we still don't know whether using mobile phones can cause cancer,we should try to use our phones__1.__.Here are some tips:

*Use a headset（耳机） or speaker.

Headsets give out much less radiation than phones.Some wireless headsets give out low-level radiation.However,

you should __2.__your headset when you're not talking to anyone.Using a phone with a speaker will also make it safer.

*Listen more, talk less.Your phone gives out radiation when you talk or text,but not when you're listening or getting messages.

*Hold the phone away from your body when you are talking,not _3._your ear.Also,don't keep it in your pocket.

*Choosing texting over talking.Phones give out less radiation when sending texts than when making calls.Texting also keeps radiation away from your head.

* Poor signal?Stay off the phone.Fewer signal bars（信号数） on your phone__4.__that the phone needs to give out more radiation to work.Make and take calls [when your phone has a strong signal.

Answer

1.E

2.A

3.D

4.B

【解析】

试题分析：短文大意：该文给出了一些如何健康使用手机的建议。

1.E句意：我们应尽量安全地使用我们的手机。所填词在句中修饰动词作状语该是一个副词，结合所给的词汇可知该填写safely，所以选E。

2.A句意：但是，你应该摘下你的耳机。所填词跟在情态动词should之后一起构成谓语动词，结合所给的词汇可知该填写take off，所以选A。

3.D句意：在你说话的时候保持手机远离你的身体，不要靠着耳朵。结合所给的词汇可知该填写against，所以选D。

4.B句意：在您的手机上的信号条数更少，说明你的手机需发出更多的辐射才能工作。所填词在句中作谓语动词，结合所给的词汇可知该填写mean ，所以选B。

考点：短文填空。