对于企业来说，以下哪一项检索对其作用最大（）
A.会议论文的检索
B.学位论文的检索
C.专利、商标信息的检索
D.研究论文的检索
参考答案：C
Simon has written many famous songs, perhaps the most famous of ______ is 'Bridge over
Troubled Waters'.[ ]
A. those
B. which
C. them
D. what
It is reported that heatrelated deaths are __________ due to brain damage.
A．rather
B．very
C．quickly
D．largely
