数学啊〜

去掉零点005的小数点.原数扩大10多少 .把8.45的小数点去掉,是原数的100 把0.35去掉小数点得多少,原数就 讲0.35的小数点去掉以后,就扩大到原数 把0.52的小数点去掉,结果比原数大多少 去掉0.205的小数点后,原数扩大多少倍 把0.47的小数点去掉后,原数酒（）到它 0.27去掉小数点,这个数扩大了（）倍, 去掉0.38的小数点,使它变成整数,原数 li lei can speak english改为一般疑问句 li lei doesnt run as far as wang lin Li Lei doesnt run as far as Wang Lin的同义句 li lei doesnt run as fast Li Lei draw an elephant li Lei gave Tom a new pen .的被动语态