1. affect/ effect/ infect/ defect

The young teacher       the whole class with her enthusiasm.

The climate      his health. 

A new system of taxation will be brought into      next year.生活日记网(www．Examw。com)

The government’s action had no      on the trade imbalance.

The new car had to be withdrawn from the market because of a mechanical      .

2.   assist/ resist/ consist/ insist/ persist

I couldn’t     telling him the secret.

We asked him to     us in designing a new bridge.

If you      in breaking the law you will go to prison.

The cold weather will       for the rest of the week

He    on paying for the meal. He      that he had done right.

A university      of teachers, administrators and students.

答案：

1.      infected, affected, effect, effect, defect

2.      resist，assist，persist，persist，insisted，insisted, consists