Choose the words or expressions and complete the passage(选择最恰当的单词或词语，完成短文。用A、B、C或D表示)

　　What is blood? It is the red liquid which comes out of your finger where you cut it.

　　There are about thirteen pints(品脱) of blood in a man's body. He can 　　1　　 a pint of blood at a time to the blood bank for the use of other people who may need it. A healthy body makes up the pint of blood quickly.

　　What does blood do for us? It 　　2　　 food to all parts of our bodies and takes waste away from them. All parts of our bodies are made up of cells(细胞). These cells, which are very small, all need food all the time. No one 　　3　　 cells before the invention of microscope(显微镜). Before then no one could make pictures of cells because no one could see them.

　　What makes the blood move round the body? The heart sends it round. 　　4　　 man's heart is the size of his shut hand.

　　The heart is a pump(泵). It pumps blood and sends it round the body. The heart has four rooms with doors between them. It pumps blood in and out 5these doors by changing the size of the rooms so that the doors open and shut. The heart keeps a stream(一股) of blood 　　6　　 all round the body and back again to itself. The heart is a very important part of one's body. When it stops beating, one will die very soon.

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阅读短文并选出能回答所提问题的最佳答案

　　　Will You Help?

　　

　My friend Pedro works in the post office. He is a good sportsman; and so he belongs to （属于）the Ajax Sports Club （俱乐部）.

　Three months ago, Pedro made a money-box. He got a flat（扁平的）box, and he coloured it white, He cut a slit （缝）in the top of the box. (This slit was for the money, of course.) He wrote these words on the box in big letters: WILL YOU HELP?

　　

　That was all. He did not write his name, or any name. The words were

　　

　just—WILL YOU HELP?

　Pedro took the money-box to the club. He put it on a table just inside the door. Every Friday evening he opens the box.

　　

　I do not belong to the Ajax Sports Club, but went there last Friday evening with Pedro. He opened the money-box and took out the money.“Not bad,” he said. “Between two and three pounds.”

　He shut the box then, and put it back on the table . The money went into Pedro's pocket.

　　

　“People are kind,”Pedro said. “They like to help. They like to give some money away.”

　“Are you going to keep the money?” I asked.

　“Yes. I'mnot a rich man, and that box is mine.”

　I said,　　 “Doesn't anyone ever ask questions about it?”

　“No. They help or they don't help . They never ask questions. People don't like to ask questions about money.”

(1)　　 Why does Pedro need the money?　　　

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A．He doesn't rightly need it.

B．Because he is a poor man.

　　

C．He needs it for the club.

　　

D．Because he hasn't got a job.

　　

(2)　　 What does a money-box always have?　　　

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A．Money inside it.

　　

B．The words WILL YOU HELP?

　　

C．A slit.

　　

D．It must be white.

　　

(3)　　 How often does Pedro open the box?　　　

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A．He opened it last Friday.

　　

B．Every Friday.

　　

C．It is full, so he opens it.

　　

D．Every three months.

　　

(4)　　 Why does Pedro leave the box near the club door?　　　

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A． Because there is a table there.

B．The club won't let him leave it in any other place.

C． The door-man can look after it there.

D．People are always coming and going, and they see it easily there.

(5)　　 People put money in the box . Whom were they helping?　

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A．Pedro

B．The Ajax sports Club

　　

C．poor sportsmen

　　

D． The post office