is known to us all is that the old scientist, for　　life was hard in the past,

题干

　　　is known to us all is that the old scientist, for　　life was hard in the past, still works very hard in his eighties．

A．As; whom	B．What; whom
C．It; whose	D．As; whose

上一题下一题 0.64难度单项选择更新时间:2017-02-07 04:39:22

小学学科试题库

初中学科试题库

高中学科试题库