wipe out⼀away⼀off⼀up的区别

　　wipe vt.擦，擦去
　　如：①Please wipe the table .请擦去桌子上的灰尘。

其基本用法：
1、wipe out 擦去、擦干净；破坏、彻底毁掉
如：②Please wipe the bottles out before you return them.
归还瓶子前请将她们擦干净
③Half of the population was wiped out by the earthquake.
一半以上的人口在地震中丧生。
④The town was wiped out by the earthquake.
那座小镇在地震中破坏殆尽。

2、wipe sth. off=wipe away 擦净，擦掉某物
如：⑤He got up to try to wipe the dust off his coat.
他站起来试图擦掉衣服上的灰。

3、wipe up擦干、擦净
如：⑥You do not have to wipe up the dishes.
你不必擦干这些碟子。

4、wipe away=wipe off清除、扫除
⑦The government is trying to wipe away the illegal weapon dealing in
the southern part of the country.
政府正设法清除掉该国南部的非法军火交易。

就本题而言，“政府正设法【 】该国南部地区的毒品交易”，缺少了“清除、扫除”
之意，且作抽象意义，不针对具体事物，wipe away符合。故答案B