填空题

Space and oceans are the new world which scientists (try) ______ to explore.

【参考答案】

are trying
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单项选择题
A．When can you goB．How much is itC．Where is itD．What will you do
A．When can you go
B．How much is it
C．Where is it
D．What will you do
填空题
shot
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