问题

The space suits can be adjusted so that the team can reproduce different levels of gravity as if they________in space

A:pull out
B:pull down
C:pull up
D:pull through

正确答案是：

同类题型

At present ________ of the experiments ________done in labs after the new building has been finished

Nanjing Underground Line 10 ______ on the morning of February 27th, 2014.

he World Cup at hand, _______ hasbeen a heated discussion over which country the championship will go to.

Never fail to be _________ /’θkfl/ to the people around you.

This is a kind of traditional classroom teachingstudentsare taught a lot about grammar rules.