Questions 1-6Choose the appropriate letters A-D and write them in boxes 1-6 on

游客2024-01-09  19

问题 Questions 1-6
Choose the appropriate letters A-D and write them in boxes 1-6 on your answer sheet.
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选项 A、people should avoid working in cities.
B、Americans spend too little time outdoors.
C、hazardous gases are concentrated in industrial suburbs.
D、there are several ways to avoid city pollution.

答案 D

解析 Refer first line paragraph 3.
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