题目内容
（请给出正确答案）
[单选题]
The originally clean river is now seriously polluted and unfit _______.
A.to swim
B.for swimming
C.to swim in
D.for swimming in
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题目内容
（请给出正确答案）
如果结果不匹配，请 联系老师 获取答案
题目内容
（请给出正确答案）
A.to swim
B.for swimming
C.to swim in
D.for swimming in
如果结果不匹配，请 联系老师 获取答案
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A. Was originally developed by Dr. Carlo
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A．set off
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D．The East.
A.narrowing of meaning
B.widening of meaning
C.meaning shift
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A Was originally developed by Dr. Carlo
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E A, B and C only
