China sent up Shenzhou Ⅸ manned spaceship into space successfully, which shows

题干

China sent up Shenzhou Ⅸ manned spaceship into space successfully, which shows science and technology ______ rapidly in China.

A．have been developing	B．have developed
C．has been developed	D．is developing

上一题下一题 0.64难度单项选择更新时间:2013-07-22 06:26:13

小学学科试题库

初中学科试题库

高中学科试题库