NotonlytheUSAandRussiabutalsoC

Not only the USA and Russia but also China ________ manned satellites to circle the earth.

A．has sent up	B．has been sent up
C．have sent up	D．had been sent up

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If you are from doing something, you are officially prevented from doing it.

A．seeped

B．dispersed

C．bombarded

D．banned

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The school offers many _____ activities for the local students.

A．infectious	B．recreational
C．fragile	D．vocational

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It is ______ that the noise around us is a(n) _______ to our health and well being.

A．preventable; precaution	B．denial; existence
C．undeniable; hazard	D．vital; culprit

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We can broaden our horizons through _________ to new things.

A．hazard

B．exposure

C．recreation

D．vapor

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Jack’s house has been broken into twice and now he takes________ against theft
at any time.

A．risks

B．chances

C．turns

D．precautions

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