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【单选题】
China's first Mars probe，Yinghuo1，was launched in the second half of the year 2011 and it was the
first time that China ________ another planet.
[ ]
A.
explored
B.
researched
C.
discovered
D.
invented
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A.
Given
B.
To give
C.
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D.
Having given
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A.
Once published
B.
When to publish
C.
After is published
D.
While publishing
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A.
anyone
B.
the one
C.
that
D.
whoever
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A.
explored
B.
developed
C.
opened out
D.
uncovered
【单选题】— Excuse me, sir. Would you do me a favour?— Of course. What is it? — I _____ if you could tell me how to fill out this form. [ ]
A.
had wondered
B.
was wondering
C.
would wonder
D.
did wonder