SandstormsinChinaappeartohaveincreasedinrecentyears 

问题详情：

  Sandstorms in China appear to have increased in recent years  ____   “desertification".

A . as a result   B.  as a result of   C. as result of     D. as a result of it

【回答】

B

知识点：词组 短语

题型：选择题