题目内容
Section B
Directions: In this section, you will hear 3 short passages. At the end of each passage, you will hear some questions. Both the passage and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A, B, C and D.
听力原文： (30) "Marginal" lands might have low quality soil. Or they might be on a hillside that rises sharply. Or they might be in an area that gets limited rainfall. In any case, they are the last to be planted under good conditions and the first to be abandoned under bad conditions.:
But there are uses for marginal lands. Most often they are used as grasslands for cattle, sheep or goats. A farmer might use native grasses or non native seeds. Either way, it is important to establish good ground cover to avoid the loss of soil through erosion. But using marginal land for grazing is not as simple as it might sound. Cattle can damage forage(草料) crops by eating down to the roots. Their weight also crushes the soil. That can make the ground too hard for growing. (31) A way to reduce the damage from overgrazing is to move animals from one field to another. Experts say rotational grazing like this is extremely important for marginal land.
Another use for marginal land is for tree crops. Trees help support the soil. They reduce the damaging effects of wind and rain. And they can provide grazing animals with shade from the sun. Studies have shown that white pines grow well on marginal land. They grow fast and provide good quality wood. There are slower-growing trees like the black walnut that provide a nut crop as well as wood. Marginal lands need care. Failing to take care of them might only make a bad situation worse. But good planning can turn a marginal resource into a highly productive one.
Questions:30. Which of the following is a marginal land？
31.According to the speaker, how to reduce the damage on marginal lands from overgrazing？
32.Which of the following is NOT the advantage of planting trees on marginal land？
(27)
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A．His mother's use of the washing machine.B．His father's turning on the microwave oven
听力原文：W: What are you doing？
M: (20) I'm ordering some filing cabinet out of a catalog.
W: What do you need them for？
M: There's so much stuff piling up in my dormitory room. If I don't do something soon, I won't be able to move in there.
W: Do you usually order from a catalog？
M: Sometimes. Why？
W: (19) Oh, it's just in the history class today we were talking about how the catalog sales business first got started in the U. S. A Chicago retailer, Montgomery Ward started it in the late 1800s. (21) It was really popular among farmers. It was difficult for them to make it to the big city stores so they ordered from catalogs.
M: Was Ward the only one in the business？
W: At first, but another person named Richard Sears started his own catalog after he heard how much money Ward was making.
M: What made them so popular？
W: Farmers trusted Ward and Sears for one thing. They delivered the products the farmers paid for and even refunded the price of things the farmers weren't satisfied with. (22) The catalog became so popular in some countries that school teachers even used them as textbooks.
M: Textbooks？
W: (22) Yes. Students practice spelling the names and adding up the prices of things in the catalogs.
M: Was everybody that thrilled about it？
W: That's doubtful. Say they drove some small store owners out of business. Sears and Ward sold stuff in such large quantities. They were able to undercut the prices at some small family owned stores.
19. What are the two speakers mainly talking about？
20.What does the man need the catalog for？
21.What can we learn about the catalogue business from the conversation？
22.Why did some schools use catalogs？
(23)
A．Because a police-car followed his.B．Because he wanted the man in his car arrested.C．
What happened to the cherished list several months after the author's vacation？
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