选择与画线部分意思相同或相近的词语。

1. Class 9 had agreat time on the school trip.           [ ]

A. enjoyed themself  

B. enjoyed themselves    

C. had good time    

D. had afun

2. Look! Our math teacher is in a red skit.[ ]

A. putting on  

B. trying on    

C. wearing    

D. dressing

3. They had a very bad day off.[ ]

A. very tired  

B. not good    

C. all right    

D. terrible

用保鲜袋包裹新鲜的水果和蔬菜可延长储存的时间．因为这样处理可抑制水果、蔬菜的（　　）

A．光合作用

B．呼吸作用

C．吸收作用

D．运输作用