【正确答案】
B
【答案解析】[解析] 画线词collaborate为动词,意为“合作,协作”。A项compete意为“竞争,比赛”;例:We can compete with the best teams.我们能与最好的团队竞争。B项cooperate意为“合作,配合”;例:I note that she was not willing to cooperate.我注意到她并不愿意合作。C项coordinate意为“调整,协调”;例:We must coordinate our operations with theirs.我们必须使我们的行动与他们的行动协调一致。D项contend意为“竞争,主张,斗争”;例:A hundred flowers contend in beauty.百花争艳。故本题选B。