A、Because the harm of smoking hasn’t been realized.B、Because smoking hasn’t bee

游客2024-09-10  9

问题

选项 A、Because the harm of smoking hasn’t been realized.
B、Because smoking hasn’t been banned in public places.
C、Because it is difficult for people to drop a bad habit.
D、Because the price of cigarettes is low.

答案 D

解析 由句(2-1)可知,美国是一个领土广阔的国家,近几十年来,飞机既便宜又方便,故排除选项A和C。由句(2-2)可知,美国人喜欢驾车出行,故排除B。因此答案为D。
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