采用土压式盾构施工隧道工程时，可以减少开挖面处地表隆起的措施是（）。

A.增加土层压力 

B.减少排土量 

C.改良泥土的塑流性 

D.增大结构总推力 

Smoking is so harmful to personal health that it kills_____people each year than automobile accidents.

A．seven more times

B．seven times more

C．over seven times

D．seven times