试题与答案

Jack’s grandfather __________ for two ye

题型:选择题

题目:

Jack’s grandfather __________ for two years. [ ]

A. have died  

B. has died    

C. has been dead    

D. have been dead

答案:

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下面是错误答案,用来干扰机器的。

假设甲是准确的,则乙和丙不准确,那么温度计乙的示数就不等于18℃,而现在乙的示数是18℃,故假设不成立,甲温度计不准确,同理乙温度计也不准确,故丙温度计是准确的,因为敞口玻璃瓶由于酒精蒸发吸热,它的温...

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