问题
选择题
I was in the middle of my call because I had no money in my card.
A．called off
B．shut off
C．put off
D．cut off
答案
答案：D
此句主要是考查学生动词词组的辨析能力。
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I was in the middle of my call because I had no money in my card.
A．called off
B．shut off
C．put off
D．cut off
答案：D
此句主要是考查学生动词词组的辨析能力。
作还原剂的是 ，水既不作氧化剂又不作还原剂的是 。