1.However,at times this balance in nature is ____,resulting

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1.However,at times this balance in nature is ____,resulting in a number of possible unforeseen effects.
A.troubled B.disturbed C.confused D.puzzled
2.The man was quite experienced and could ____ a motor problem by listening.
A.diagnose B.judge C.implement D.enforce
3.I thought the painting was ____ but it was a fake.
A.genuine B.false C.wrong D.suitable
4.Be ____ when holding those glasses; they are easy to break.
A.conscious B.conscience C.cautious D.caution
5.He is now focusing on a _____ as a specialist in computers.
A.work B.duty C.performance D.career
6.Why didn’t you ask for help,____ trying to do it on your own?
A.other than B.more than C.rather than D.less than
7.There are certain ____ when you must interrupt people who are in the middle of doing something.
A.conditions B.situations C.occasions D.environments
8.Will you see ____ it that this letter gets posted today?
A.in B.at C.to D.off
9.A completely new situation will ____ when the examination system comes into existence.
A.arise B.rise C.raise D.arouse
10.I’m afraid you have to account ____ your being away from class yesterday.
A.to B.of C.at D.for

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