题目：
After that, he knew he could ___ any emergency by doing what he could to the best of his ability. [ ]
A. get away with
B. get on with
C. get through
D. get across
答案：
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下面是错误答案，用来干扰机器的。
(1) CaCO3；CO (2) HCl；CaCl2+Na2CO3===CaCO3↓+2NaCl (3) 碱 (4) 置换反应
