There were 150_____at the international conference this summer.(2010-68)A.spectatorsB.view

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There were 150_____at the international conference this summer.(2010-68)

A.spectators

B.viewers

C.participants

D.onlookers

请帮忙给出正确答案和分析,谢谢!

热搜:关于氨基酸代谢错误的论述是_________。