_____ astronauts cannot go to a baseball game or a movie in space, there are man

题干

_____ astronauts cannot go to a baseball game or a movie in space, there are many familiar activities that they can still enjoy.

A．Once

B．Unless

C．While

D．Since

上一题下一题 0.64难度单项选择更新时间:2016-02-29 03:44:07

小学学科试题库

初中学科试题库

高中学科试题库