2. 外语
  3. Some cities have passed laws that allow coal and oil______only if their sulfur content is low.

Some cities have passed laws that allow coal and oil______only if their sulfur content is low.

admin2018-01-16  63
问题 Some cities have passed laws that allow coal and oil______only if their sulfur content is low.
选项 A、burning
B、to burn
C、being burned
D、to be burned
答案D
解析 本题考查动词allow的用法。allow sb．to do sth．，“允许某人做某事”，所以A和C排除。煤和石油应该是被燃烧，应该用被动语态，故D为正确答案。
转载请注明原文地址:https://kaotiyun.com/show/CkCO777K
0

成人本科学位英语

相关试题推荐
随机试题
最新回复(0)