题目内容
用括号里所给的词的适当形式填空。
1.They ________(come ) to China two months ago.
2._________ he __________ ( tell ) you a story last Sunday?
3.We __________ ( not watch ) TV last night.
4.Let me __________ ( help ) you.
5.Listen! Sue ____________ ( sing ) an English song.
6.Tom always __________ ( get ) up at six o'clock in the morning.
7.How many ______ (sheep) are there on the farm?
8.His English teacher enjoys_________________(listen) to music.
9.His parents ____________ (worry) about him now.
10.Is Tony’s brother of medium_______(high)?
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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.