Although the two players are ______ on the tennis court, they are really good friends.
A.
partners
B.
enemies
C.
rivals
D.
companions
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【单选题】Since the routine use of antibiotics can give rise to resistant bacteria capable of surviving antibiotic environments, the presence of resistant bacteria in people could be due to the human use of pre...
A.
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B.
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C.
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D.
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E.
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