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问题 选择题

燃料电池不是把还原剂、氧化剂物质全部贮藏在电池内，而是在工作时，不断从外界输入，同时将电极反应产物不断排出电池。下面有4种燃料电池的工作原理示意图，其中正极的反应产物为水的是

A．固体氧化物燃料电池

B．质子交换膜燃料电池　

C．熔融盐燃料电池

D．碱性燃料电池

答案

答案：B

阅读理解

阅读理解。

     Events Time Information about Players

The girls' 400-meter race 8:00 a. m. Ten girl runners from Grade Two will be in the girls' 400-meter race. Among these runners, both Li Li and Han Wei run very fast. Maybe they will have equal (均等的) chance to win the first place.

     The long jump 9:15 a. m. All the players are very good. However, two players, Wang Liang and Ma Ming, from Class Two, Grade Three are better than any other player. Last sports meet they were both in the first place, The shot-put event 2:10 p. m. More than twelve players will take part in this event. They are all very strong and everyone has a good record. Li Feng is the best of all the players. His best record is 16. 7 meters and the school record is his. No one has broken this record so far. The relay race 4:00 p. m. It will be an expecting race. All the runners are good at running, It's difficult to say which class will be the winner.

1.1f you arrive at the ground at 8:30 a. m. ,you can watch        .

A. the girls' 400-meter race    

B. the long jump

C. the shot-put event        

D. the relay race

2. According to the writer,which class may win the long jump ?

A. Class l.                

B. Class 2.

C. Class 3.                

D. Class 4.

3. Who is the best player in the shot-put event?

A. Li Feng.                

B. Wang Liang.

C. Ma Ming.                

D. Li Li.
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单项选择题

2013年春节期间，四川省乐山大佛博物馆文物陈列展精选200多件展品向游客和市民免费开放，受到了广泛的好评。免费开放博物馆意在（）

A.展示人类文化遗产，吸收外来优秀文化

B.扶持公益文化事业，转变文化消费方式

C.大力发展文化产业，发展繁荣文化市场

D.发展公益文化事业，保障人民文化权益
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