搜题
王老师:19139051760(拨打)
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第1题

5. The mayor promised to take effective measures to ________ the city. (A) agree on (B) come to (C) clean up (
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第2题

恒定流一定是均匀流，层流也一定是均匀流 A) 正确 B) 错误
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第3题

4. No one has yet succeeded in explaining the _________ of how life began.　 (A) problem (B) cause (C) puzzle (
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第4题

3. He was a ________ person in spite of his great success.　 (A) ambition (B) modest (C) observe (D) applicatio
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