题目

计算下列各题 (1) (2) 答案:解:原式=−4+4−1+3=2 解:原式=27a6b3⋅4a2b8÷6a5b3=108a8b11÷6a5b3=18a3b8Football is one of ______ in China.( ) A. the most popular sports      B. the most popular s C. more popular sport          D. more popular sport
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