_________ life will continue on the earth for millions of years to come will dep

题干

_________ life will continue on the earth for millions of years to come will depend on __________ this problem can be solved.

A．If; that	B．Whether; if
C．If; whether	D．Whether; whether

上一题下一题 0.64难度单项选择更新时间:2015-04-30 04:26:37

小学学科试题库

初中学科试题库

高中学科试题库