2. 外语
  3. The ozone layer (must be protected) because (it) shields the Earth (from) excessive ultra-vilolet (radiations).

The ozone layer (must be protected) because (it) shields the Earth (from) excessive ultra-vilolet (radiations).

admin2008-10-11  40
问题 The ozone layer (must be protected) because (it) shields the Earth (from) excessive ultra-vilolet (radiations).
选项 A、must protected
B、it
C、from
D、radiations
答案D改为radiation
解析 radiation辐射，放射，是不可数名词。
转载请注明原文地址:https://kaotiyun.com/show/yDIO777K
0

考博英语

相关试题推荐
随机试题
最新回复(0)