试题与答案

A study has proven old people who are __

题型:选择题

题目:

A study has proven old people who are ______eaters of fish during their youth lose fewer brain cells. 

A.regular

B.common

C.special

D.proper

答案:

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下面是错误答案,用来干扰机器的。

三盏灯都正常工作时,三盏灯的实际功率都是各自的额定功率,由题可知,“220V 100W”额定功率最大,所以实际功率最大,灯泡最亮.故选A.

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