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问答题Because agriculture is so important to a nation's well-being, governments have always been concerned with it. For example, the United States and Canada have long produced surpluses that complicate their economies. Surpluses tend to lower prices to farmers and seriously endanger the agriculture industry. Governments have Instituted systems of price supports to maintain a fair price when surpluses cause prices to drop. The system in the United States is a good example. A government program supports the prices paid to farmers for grains, and other agricultural products. Support prices are based on parity, which is the ratio between the prices farmers receive for their crops and the prices they must pay for things they need. The government selected the period from 1910 to 1914 as a time when farm prices were in a fair ratio with farming costs. This is the base period now used to determine parity prices.
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完成对话Karen: Hello. Could I speak to Justin, please? Justin:______
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完成对话Donald: Let’s eat out, shall we?   Mason: I’m broke. I’ve gone through my paycheck for the weed already.   Donald: Don’t worry. ________.
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完成对话A: Dad, could you help me with my math assignment? B: ______ But I’ll try.
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完成对话A: It''s been a wonderful evening. Thank you very much. B:_____
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完成对话Ted: Thanks for your watermelon. It is very nice._____. James; At the farmer''s market round the corner.
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完成对话A: It must feel great to be almost finished with school. At least you can see the light at the end of the tunnel. B: _______________
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完成对话A: I just heard that the tickets for tonight''s show have been sold out. B: Oh, no!_____.
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完成对话Dad: Could you run over to the store right away? We need a few things. Son: ______
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完成对话A:Are you ready for the test tomorrow?   B: __________   A: Come on. I am sure you will do well.
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完成对话A: I’m sorry, there’s no record of your booking here. B: ______ I called the office this morning. A: Let me check again.
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完成对话A: I thought you were working until 6:30.   B: ___________, but we finished our meeting at 5:30 and were let go.
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完成对话Jerry: Hey, Linda, how are you? It''s nice to see you again after all these years. James:_____
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完成对话Speaker A: Hi, My name is Mark. I’m from Houston, Texas.   Speaker B: I’m Bill. Glad to meet you. What year are you?   Speaker A: ________.
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完成对话Operator:______. May I help you? David: I''d like to set up a telephone service, please.
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完成对话Tina: Mmm... This is the best pudding I''ve ever had! Lyle:______ I know you''d like it.
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