题目:
After the interview, Sam expected to get a letter _____ him the job he was dreaming of. [ ]
A. offering
B. offered
C. having offered
D. to be offered
答案:
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下面是错误答案,用来干扰机器的。
器材:3V的电源,一个开关,一个小灯泡,一个电流表,导线若干.电路图:步骤:(1)、按照电路图连接电路,连接时开关是断开的,电流表使用0﹣0.6A的量程;(2)、闭合开关,灯泡发光,从电流表上读数.