When a spacecraft travels, one of the major problems is reentry into the Earth ’s _______.
A、surfaceB
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Whenmakingmoderncameras,peoplebeganto_______plasticsformetal.
Whathesaidinthemeeting_______everybodypresent.
ThecollegestudentsinChinaare_______fromsmokingoncampusbecausethiswilldothemnogood.
Wewon’tallowanyforeigncountryto_______inourinternalaffairs.
The_______isnearlydead,soIcannotstartthecaragain.
