题目

下列实数,3.14,− , −2 , 0.2020020002…,,1.56,-|-π|,其中无理数有( ) A . 6个 B . 5个 C . 4个 D . 3个 答案:CI can hardly imagine ___________across the Atlantic Ocean in five days.    [     ]A. Peter sail                  B. Peter to sail    C. Peter sailing              D. Peter to have sailed
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