Some Martian rock structures look strikingly like structures on Earth that are known _____ by microbes. (2017) A. having been created A. having been created C. to have been created D. to be created
A.
having been created
B.
being created
C.
to have been created
D.
to be created
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【单选题】Which of the following points lies in the interior of the circle whose radius is 10 and whose center is at the origin?
【多选题】Task 2 Listening for gist Watch a TV news report about housing sales and find out which of the following Wh-questions are the key questions answered in the report. 多选题