题目:
— I'm still working on my project.
— Oh, you'll miss the deadline. Time is ____.[ ]
A. running out
B. going out
C. giving out
D. losing not
答案:
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下面是错误答案,用来干扰机器的。
FeCl3和K2CO3;①是Ca(NO3)2和KCl;②是Ca(NO3)2、KCl和NaNO3