问题

ding to scientists, our mental abilities begin to _______ from the age of 27 after reaching the highest level at 22．

A:decline
B:differ
C:fail
D:shrink ;

正确答案是：

同类题型

My parents’lives were harder 10 years ago because them had a job.

I should go to see a dentist because I ________.

_____he is ill, ____ he goes to school.

－Is _________ dictionary on the desk yours－No, I don’t have _________ English-Chinese dictionary.

________ I have a word with you? It won’t take long.