问题 单项选择题

关于渗流模型与实际渗流的比较,下列说法正确的是( )。

A.( 流速相同

B.( 流量相同

C.( 各点压强不同

D.( 渗流阻力不同

答案

参考答案:B

解析: 根据渗流模型的定义可以看出,渗流模型与实际渗流的流量相同,但是流速不同,各点的压强及渗流阻力也都相同。 [点评] 本题考察的是对渗流模型的理解,要注意渗流模型与实际渗流相比较哪些物理量不相同,有什么区别。

阅读理解

He is talent and charm(魅力) have made him the No.1 Chinese classical artist in the world. He played in the grand Beijing Olympic opening ceremony last summer, watched by a TV audience of 5 billion.

Lang Lang, 26, is the first Chinese pianist to play with the world’s top orchestras, making his debut at the Carnegie Hall in New York at 18, while still a student.

Lang Lang’s charm and fondness for sharp clothes make him a natural fit to represent(代表)China’s new international image. According to the British newspaper the Times, “The Lang Lang effect” is responsible for driving 36 million Chinese children to learn the piano.

Now in China children are learning Chopin(肖邦) and Western orchestras are touring Chinese cities, but can China ever export(出口)its own music to the west? Lang is trying. His cooperation with the London Symphony Orchestras this month includes a performance of Dragon Songs, an album of traditional Chinese classics.

Behind the international recognition, however, is a fascinating story of a gifted child. Lang grew up with his father’s own musical ambition and high expectations. It is not hard to imagine how boring it must be to practice the piano every day. Lang said that he once hated his hands and the piano. He injured his right hand six years ago and had to rest. “That was the best month,” he says, without hesitation. “I had a date. I saw a Broadway show and saw Britney Spears in concert.”

小题1:Which of the following is NOT the reason why Lang Lang is the No.1 Chinese classical artist in the world?

A.He played in the Beijing Olympic opening ceremony last summer.

B.He has as many as 5 billions fans in China.

C.He is the first Chinese pianist to play with the world’s top orchestras.

D.He plays the piano so well and has a good international image.小题2:The underlined word “debut” in the second paragraph probably means____.

A.first class

B.first performance

C.first plan

D.first choice小题3:Which of the following statements about Lang is true?

A.He has 36 million Chinese students in China.

B.He is touring China giving concerts.

C.He is trying to export Chinese music to western countries.

D.He only played traditional Chinese classics in his cooperation with the London Symphony Orchestra.小题4:From the last paragraph we can infer _____.

A.Lang didn’t like his father when he was little

B.he was happy to practice the piano everyday

C.his father’s desire and expectations played an important role in his childhood

D.he injured his right hand on purpose six years ago

选择题