Have you ever wished that you could brush your teeth while you’re moving? It turns out that scientists have the answer. There’s a special kind of edible toothpaste（牙膏）you can actually eat. You can use it to brush your teeth and eat it afterward. Without the need to spit（吐出）, edible toothpaste is really convenient.

　 NASA invented edible toothpaste in the 1960s. They made it for astronauts in space and people called it “the astronaut toothpaste”. This is because spitting out toothpaste in space can be dangerous. Without gravity（重力）it can go everywhere and can damage spacecraft computers if it gets inside them. Edible toothpaste doesn’t foam（起泡沫）either so there is no mess.

　 If you don’t like the sound of edible toothpaste, there’s also a special toothbrush you can buy. When people travel to a place without water, they often use it. You just need to chew and it cleans your teeth just like you are using a normal brush. After you finish brushing your teeth, you spit it out and get rid of it. No mess and no worries.

(　　 )73. The Chinese meaning of the word “ edible ” in Paragraph 1 is ________.

A. 可以用的　 B. 可以吃的　　 C. 可以喝的　　　 D. 可以买的

(　　 )74. If people spit out normal toothpaste in space, ________.

A. it will fall down to the ground　 B. it doesn’t foam and there’s no mess

C. it’s bad for the astronaut’s health D. it may cause problem for the spacecraft

(　　 )75. According to the article, which is NOT true about edible toothpaste?

A. It’s very convenient.　　 B. You can eat it.

C. You can spit it out.　　　 D. You can use it many times.

(　　 )76. The last paragraph mainly talks about 　　　 .

A. water　　 B. a normal brush　 C. a special toothbrush　 D. edible toothpaste

　　　　There was once an honest（诚实的）boy in a mountain village.He liked reading very much, but his family was too poor to buy 　　him any books. In a village far away there lived a rich man. He had a library in which he kept all kinds of books. This man liked 　　making friends with honest children. When the boy heard this, he went a long way to see the rich man and asked him to lend him 　　some books. The man said to the boy,"You can borrow any books you want if only（只要）you keep them clean and return them in time."

　　　　In this way the boy read a lot of books and when he grew up, he

became a great scientist.

　　根据短文内容，选择最佳答案。

　　 1. Once in a mountain village, an honest boy enjoyed ______ very much.

[　　]

　　　　 A. playing football　　　B. drawing pictures

　　　　 C. watching TV　　　　　 D. reading books

　　 2. The rich man lived ______. 

　　　　　　　　　　 [   ]

　　　　 A. next to the boy's village

　　　　 B. in the same village

　　　　 C. far away from the boy's village

　　　　 D. in a mountain

　　 3. The rich man ______.　　　　　　　　　　

[　　]

　　　　 A. borrowed a lot of books from the library

　　　　 B. lent all kinds of books to the library

　　　　 C. kept different kinds of books in his library

　　　　 D. bought many books in the library

　　 4. The man lent a lot of books to the boy because ______.

[　　]

　　　　 A. he knew the boy very well

　　　　 B. the boy kept his books clean

　　　　 C. the boy returned his books in time

　　　　 D. both B and C

　　 5. At last the boy ______ a great scientist.

[　　]

　　　　 A. made a friend with　　　B. learned a lot from

　　　　 C. himself became　　　　　D. made the rich man

　 Chen Weijun，13，is a Junior 1 at Huaqiao Middle School in Haikou，Hainan．

　 This week，he had the happiest time．On Tuesday，he went to the Great Hall of the People in Beijing．He and nine other kids became the Top 10 Young Pioneers．

　 “Now I am not only my dad’s good boy．I am China’s good boy．I must work harder，”he said．

　 At school，Chen is a good student leader．He does many activities．He was in short plays．He worked as a host(主持人)for his school．”

　 “I am sure of myself．It’s good to try different things，”“Chen said．”If you can dream it，you can do it．”

　 Chen’s teacher，Xie Wei，said，“Chen is nice and helpful．” ”He doesn’t talk much but works very hard．”

　 Young Chen always helps others．One student at his school，Wu Deyi，had leukaemia (白血病)．Chen asked students and teachers to help．From February to May，Chen got more than 20，000 yuan for Wu．

　 Chen also thinks about how to make his city cleaner．There were plastic bags in the Meishe River．Chen was sad．He wanted the liver to be clean．So he wrote a letter to the head of the city．He asked him to spend more money，tell people not to throw rubbish into the river and have a wall to keep children safe．The head of the city listened to him. Now the river is cleaner．

　 At home，Chen is a good boy．He washed his clothes．He also cooks meals for the family sometimes．Chen says his hero is Premier Wen Jiabao．“He is very brave. He is not afraid of difficulties and makes China stronger，” Chen said．Will Chen become a big leader of tomorrow?

1．Chen Weijun is 　　　　 ．

　 A．a college student　 　　　　　　 B．from Hainan Province

　 C．a Datient 　　　　　　　 D．not his dad’s good boy

2．At school，Chen is busy with 　　　　 .

　 A．his studying and many other activities

　 B．playing games and hosting his school TV

　 C．helping Wu Deyi

　 D．collecting plastic bags

3．The underlined sentence “I am sure of myself”means 　　　　　．”

　 A．自负的　 B．自满的　 C．自私的　　　 D．自信的

4．The head of the city has spent more money 　　　

　A．helping Wu Deyi with hospital expenses

　 B．building Chen’s school TV station

　 C．buying new clothes for Chen

　 D．cleaning and protecting rivers

5．The best title(标题)for the passage would be 　　　.

　 A．A Good Boy Who Likes to Help Others

B．Something about the Head of the City

C．A Big Leader of Tomorrow

D．A Boy’s Hero