题目

—What’s wrong with you? —I can’t decide ______ next. A. how to do                                                      B. what to do C. what to do it                                                   D. how can I do 答案:B  what to do作宾语时,what充当to do逻辑上的宾语,故to do后不再加宾语。由题意“我不确定接下来做什么”可知选B。把所有正奇数从小到大排列,并按如下规律分组:(1),(3,5,7),(9,11,13,15,17),(19,21,23,25,27,29,31),…,现用等式AM=(i,j)表示正奇数M是第i组第j个数(从左往右数),如A7=(2,3),则A2013= .
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