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【判断题】
压路机在碾压作业过程中，可以根据需要改变碾压速度及方向，但不得中途停机。A.
正确
B.
错误
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皮皮学刷刷变学霸
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【简答题】Many people have learned a foreign language in their own country; others have learned a foreign language in the country in which it is spoken. Which is better? Give the advantages of each and support ...
【单选题】because they _12_
A.
have not learned to write
B.
have learned to write
C.
had learned how to write
D.
had not learned to write
【简答题】Some of the students havealready learned enough English to ____ a conversation with a native Englishspeaker. A. holdon B. keep on C. goon D. carry on
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