Computers of today can work         than the ones in the 1970s.

A．hundred of times faster

B．a hundred time faster

C．hundred times faster

D．hundreds of times faster

生殖器结核的主要传播途径是

A．沿黏膜上行蔓延
B．经血液循环播散
C．经淋巴系统蔓延
D．直接蔓延
E．种植