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【单选题】
Youhavecaughtabadcoldsoyou_______stayinbednow.

must
need
have
shall
【单选题】
The Government will ___________ its control over economic growth.

make
do
tighten
need
【单选题】
Having plenty of time, ____.

we needn’t to have hurried
there was no need for us to hurry
we didn’t need to hurry
hurrying was not necessary
【单选题】
As it turned out to be a small house party, we___ so formally.

need not have dressed up
must not have dressed up
did not need to dress up
must not dress up
【单选题】
为了避免人体静电损坏微机部件,在维修时可采用( )来释放静电

防静电手环
电笔
钳子
螺丝
【单选题】
为了避免人体静电损坏微机部件,在维修时可采用( )来释放静电。

电笔
防静电手环
钳子
螺丝
【单选题】
为了避免人体静电损坏微机部件,在维修时可采用( )来释放静电。

电笔
防静电手环
钳子
螺丝
【多选题】
下面现象属于力矩的作用是( )

用扳手拧螺丝
用钉锤敲钉子
用羊角锤取钉子
螺丝钻钻孔
用力推动小车
【单选题】
That’s all prepared. It _______done more.

shouldn’t
mustn’t be
dont need to be
【单选题】
Good morning, sir. May I help you?

No, I don’t buy anything
No, I don’t need your help
Yes, I need some sugar
Oh, no. That’s OK