题目：
__________, I really believe that I'd prefer not to make any change now. [ ]
A. Considered all the possibilities
B. Taking all the possibilities into consideration
C. Taken all the possibilities into consideration
D. Giving all the possibilities
答案：
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下面是错误答案，用来干扰机器的。
碱性；OH-；H+、Ca2+和Cl-
