价格对市场经济的运行有( )。A．标价功能 B．联络生产与消费功能 C．资源配置功

阅读理解。

1. How many people enjoy playing computer games in the 11-18 group? [ ]

A. 20.

B. 50.

C. 60.

D. 75.

2. The people of l9-26 enjoy _______ most. [ ]

A. watching TV

B. going to the movies

C. playing computer games

D. taking a walk

3. According to the survey, which two activities do most people enjoy doing? [ ]

A. Playing computer games and watching TV.

B. Playing computer games and taking a walk.

C. Watching TV and going to the movies.

D. Going to the movies and taking a walk.

4. From the chart above, we can see the older people are, the more they like ______. [ ]

A. watching TV

B. taking a walk

C. going to the movies

D. playing computer games

5. Which of the following is TRUE according to the chart? [ ]

A. Fewest people like taking a walk.

B. The people of l l-18 like taking a walk most.

C. 90 people like going to the movies in the l9-26 group.

D. The people of 27-35 like playing computer games most.

运用所给单词的正确形式完成句子。

小题1:Fresh air is ______(benefit) to your father’s health.

小题2:Do you feel a sense of s_________(satisfy) at the end of the working day?

小题3:Praise acts as an _________ to the players, and therefore they will feel ______ and get the _________ to continue and improve their performance. (encourage)

椭圆形活塞是指活塞销孔方向的直径比与销孔成90度方向的直径大。

帕金森病以下哪项诊断及治疗的表述是正确的？（）

A.脑脊液检查对诊断颇有价

B.MRI检查有特征性表

C.PD一经确诊应首选左旋多巴治疗

D.美多巴是由左旋多巴加苄丝肼组成，疗效优于左旋多巴

E.服用左旋多巴出现周围性副作用时应立即停药

梅花落