单选题：one special feature of Crystal Ear is that

题目内容：

one special feature of Crystal Ear is that A．you can control its volum
B．you needn't take it off every da
C．it is solar-powere
D．it saves powe

参考答案：

答案解析：

Theworst eye damage induced by diabetes is

Theworst eye damage induced by diabetes isA．blurred visio B．black spot C．blindne

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HIV can be safely used to cure cancer only if the deadly genes have been removed

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However bad the situation is，the majority is unwilling to risk change．A．reluctan

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He talks tough but has a tender heart．A．heavy B．mild C．kind D．wild

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You have to be patient if you want to sustain your position．A．maintain B．establi

分类：卫生类题型：单选题