【单选题】Smuggling is a ______ activity which might bring destruction to our economy; therefore, it must be banneD、
 A、pertinent   
B、fruitful  
C、detrimental D、casual
网考网参考答案:C
网考网解析:
[解析] C项detrimental“有害的”,如:Smoking is detrimental to health. 吸烟对健康是有害的。根据空格处的意思“走私是有害的行为”,故选C。A项pertinent“相关的,贴切的”;B项fruitful“多产的,有收获的”;D项casual“偶然的,随便的”,均不符合题意。
                 
				 
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