导游人员在接站时未认真核对,接了不应由他接的团叫( )。
A.错接
B.空接
C.漏接
D.失误
参考答案:A
The past 30 years has ______ the great changes that have taken place in China.
A.seen
B.noticed
C.watched
D.looked
()不是我国创新活动的三大实施主体。