单项选择题
Questions 23 to 25 are based on the conversation you have Just heard.
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A.To preserve it longer.
B.To give it a particular taste.
C.To make it smoother.
D.To increase the fermentation.
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单项选择题
A.Wearing arm weights while you are swimming.B.Jogging vigorously in one place for a long time.C.Using bicycles that require you to use both your arms and legs.D.Walking slowly while swinging your arms back and forth.
A.Wearing arm weights while you are swimming.
B.Jogging vigorously in one place for a long time.
C.Using bicycles that require you to use both your arms and legs.
D.Walking slowly while swinging your arms back and forth.
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单项选择题
If man continues to interfere with the balance of nature, it is possible that ______ may soon become extinct.
A.man
B.all the living things
C.some plants
D.some birds and animals
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