输入法热键设置中中文/英文切换法用（ ）。

A:Ctrl+Space B:Shift+Space C:Alt+Space D:Tab+Space

AXE810的选组级交换方式是？（）

A:SPACE—TIME B:TIME—SPACE—TIME C:TIME—SPACE D:SPACE—TIME—SPACE

An appropriate title for this passage would be ______. ( )

A:Rendezvous in Space B:Landing at a Space Station C:New Radar for the Space Age D:Space Navigation

A:熔化 凝固 B:凝固 汽化 C:汽化 液化 D:熔化 液化

A:甲 B:乙 C:丙 D:丁

A:14 B:15 C:25 D:35

A:甲 B:乙 C:丙 D:丁

33. Once ____you may feel uncomfortablE.

A: in space B: in the space C: at space D: at the space