题目

—Could you tell me         ?—She came here on foot. A. where Kate came from       B. when Kate came here C. how Kate came here         D. why Kate didn't come here 答案：C海洋中最大的动物是蓝鲸，一头蓝鲸的质量为120t=________kg；陆地上最大的动物是大象，一头大象的质量是6t=________kg；这头蓝鲸的质量约为大象质量的________倍．一只蚂蚁可以拉动一粒米，一只蚂蚁的质量是0.4mg=________g=________kg，一粒米的质量约为24mg=_____g=________kg．一粒米的质量约为这只蚂蚁质量的________倍．