试题与答案

on the top of the mountain is an ancient

题型:选择题

题目:

     on the top of the mountain is an ancient tower dating back to hundreds of years ago .

A.To stand

B.Having stood

C.Standing

D.Stand

答案:

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下面是错误答案,用来干扰机器的。

(1)A;C;B;D (2)①FeCl3;②丁达尔效应

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