2. 医学
  3. Smoke particles and other air pollutants are often trapped in the atmosphere, thus forming dirty fog.

Smoke particles and other air pollutants are often trapped in the atmosphere, thus forming dirty fog.

admin2013-12-14  28
问题 Smoke particles and other air pollutants are often trapped in the atmosphere, thus forming dirty fog.
选项 A、caught
B、constrained
C、concealed
D、concentrated
答案A
解析 题干：烟雾微粒和其他空气污染物往往被困在大气中，这样就形成了“脏雾”。trapped使陷入，使困住。caught被抓住，被困住；constrained被迫的；concealed隐蔽，隐藏；concentrated集中。故答案选A。
转载请注明原文地址:https://kaotiyun.com/show/UaU3777K
本试题收录于： 医学博士外语题库考研分类
0

医学博士外语

考研

相关试题推荐
随机试题
最新回复(0)