John is collaborating with Mary in writing an article.A cooperating B competing

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问题 John is collaborating with Mary in writing an article.

选项 A cooperating
B competing
C combining
D arguing

答案A

解析collaborate 的意思是“合作、勾结”,cooperate 的意思是“合作”。She has agreed to cooperate with the police in the investigation.她同意在调查中跟警察合作。compet 的意思是“竞争”,combine的意思是“合并”,argue的意思是“争论”。
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