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單項選擇題

You should save your work often as a（）against computer failure.

A.sanction
B.precaution
C.shield
D.shelter

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單項選擇題

If a man is easily taken in by emotional traps, he will not be able to make（）judgments.

A.sensitive
B.sentimental
C.sensible
D.sensational

單項選擇題

It is a type of desert bush that can （） extremes of temperature.

A.adapt
B.withdraw
C.withstand
D.shade

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