The market for dust masks and air purifiers is______in Beijing because the capital has been shrouded for several days in thick f

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问题 The market for dust masks and air purifiers is______in Beijing because the capital has been shrouded for several days in thick fog and haze.

选项 A、booming
B、looming
C、dooming
D、zooming

答案A

解析 四个选项的意思分别是boom迅速发展,兴旺;loom隐约地出现,阴森地逼近;doom命中注定,宣告;zoom突然扩大,急速上升。句意是,北京防尘面罩和空气净化器市场正在迅速发展,因为首都数天来一直深受浓雾和雾霾笼罩。根据句意推出正确答案是A选项。
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