完形填空

　A pine tree in California was regarded （看作）the oldest tree in the world. People thought 　1　 was nearly 5,000 years old. 　2　　 　they could not be 　3　　 　. Then someone 　4　 the tree down 　5　　 　a chain saw （链式锯）。Kiling the 　6　　 　tree in the world was a 　7　　 　thing to do. But when the tree 　8　　 　down, 　9　　 　knew its 　10　　 　. It was 4,900 　11　　 　.

　How can you 　12　　 　the age of a tree? If you ever 　13　　 　a tree that has just 　14　　 　cut down, take a look at the cut 　15　　 　. You will see rings. There are little rings in the middle. 　16　　 　each ring is a larger one. The ring 　17　　 　the bark （树皮）is the biggest one of 　18　　 　.

　Count these rings. A tree grows one ring each 　19　　 　. A ten-year-old tree has ten rings. A sixty-year-old tree has sixty rings. 　20　　 　rings does a 4,900-year-old tree have?

　　Michael walked into a shop. It had a sign outside, “ Second-hand （旧的） clothes bought and 1 .” He was carrying 2 old pair of trousers and asked the owner of the shop, “ 3 will you give me 4 these?” The man looked at them and then said, “Two dollars.”

　　“What!” said Michael, “ I guess they are worth at least five.”

　　“No,”said the man,“they aren't worth a cent （美分） more than two dollars.”

　　“Well,”said Michael, taking two dollars out of his pocket, “here's your money. These trousers 5 outside your shop. The list price （价格） of them was six dollars and a half. But I thought that was 6 money, so I wanted to 7 how much they were really worth.”

　　Then he walked out of shop 8　the pair of trousers and disappeared （消失） 9　 the shop owner could 10 anything to say.

（1）A．selling　　B．sold　　C．sell　　D．to sell

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（2）A．a　　B．the　　C．an　　D．/

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（3）A．How much　　B．How many　　C．How far　　D．How

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（4）A．of　　B．with　　C．to　　D．for

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（5）A．were hanging　　B．was hung　　C．is hanging　　D．is hung

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（6）A．too　　B．very　　C．too much　　D．much too

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（7）A．look　　B．look for　　C．find　　D．find out

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（8）A．for　　B．with　　C．by　　D．of

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（9）A．before　　B．after　　C．when　　D．until

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（10）A．think out　　B．think　　C．think of　　D．look for

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How much did you ________all these things?

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