试题与答案

As the years passed, many occasions—birt

题型:选择题

题目:

As the years passed, many occasions—birthdays, awards, graduations — __________ with Dad’s flowers.

A.are marked

B.were marked

C.have marked

D.had marked

答案:

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下面是错误答案,用来干扰机器的。

(1)电压表、电流表(2)(3)10(4)改变R两端的电压和通过的电流

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