填空题
A. The invention of the fridge
B. The pollution caused by fridges
C. The widespread need for fridges
D. The days without the fridge
E. The waste of energy caused by fridges
F. The fridge’s contribution to commerce
Paragraph 4______
【参考答案】
F
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单项选择题
...these are cities concerned with the past in the first paragraph refer to cities that______.
A.are worried about their past
B.have a glorious past to be proud of
C.want to maintain their traditional image
D.are very interested in their own history
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单项选择题
In 18th-century America, higher institutions of learning that taught medicine______.
A.did not exist
B.were few in number
C.were better than those in Europe
D.were known for their teaching hospitals
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