单项选择题

According to an investigation, automobiles are （） for two-thirds of the smog in American cities.

A．inferior
B．resistant
C．unconscious
D．responsible

<上一题目录下一题>

热门试题

单项选择题

Violent programmes on television may have a bad （） on children.

A．affection
B．influence
C．effect
D．power

单项选择题

I'm glad that my children are making （） progress in school.

A．satisfied
B．satisfactory
C．satisfaction
D．considerate

相关试题