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

提高学习效率，就要做到                               [ ]

A．学会自主学习

B．科学安排学习时间

C．按时完成各科作业

D．课前认真预习，课上认真听讲，课后及时复习，把握好学习环节的质量