单项选择题

Few people in the United States lost their lives because

A．the temperature was still endurable
B．people remained in air-conditioned rooms
C．effective measures had been taken to reduce the hot temperature
D．air-conditioning units sometimes failed to work properly
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单项选择题
What is the European Commission's proposal to deal with electronic trash
A．All electronics manufacturers must pay to dispose of electronic trash.
B．All electronics manufacturers must get back and properly dispose of all electronic trash.
C．All electronics manufacturers must get back and properly dispose of electronic products which are more than ten years old.
D．All electronics manufactures must guarantee to get back electronic products.
单项选择题
What can we infer from the first sentence of the passage
A．Electronic products have become indispensable to people.
B．Electronic products have become a nuisance to people.
C．Only part of electronic products can bring benefits to people.
D．Some electronic products do harm to people.
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