单项选择题

They were obviously quite impressed by the arguments that the Chinese were advancing()

A.他们对中国人提出的这些论点显然颇为赞同。
B.他们对中国人正在前进的这种论点显然是赞同的。
C.显然,他们深深知道,中国人会作出这种进步的。
D.显然,他们对中国人提出了这种争论而深有印象。