题目

听录音,判断正误。 (1) Today is my birthday. (2) We are going to have a birthday party forMay at home. (3) We went to the park for her party this morning. (4) We bought some chicken, some beef and somefish. (5) May likes chocolate cake very much. 答案:错误 正确 错误 正确 正确对于近似数1.00亿,下列说法正确的(  )A.有3个有效数字,精确到百分位B.有3个有效数字,精确到百万位C.有1个有效数字,精确到百分位D.有1个有效数字,精确到百万位
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