阅读理解Joker found one of the biggest diamonds in the world right in his own back yard. He sold the stone to a diamond dealer for over three hundred thousand dollars. In New York, the diamond was resold---this time for almost eight hundred thousand dollars. The true value of a diamond is never known until it has been cut. Once cut successfully, its value can increase a thousand times. It's easy to understand why the owner of Joker's diamond went to the best diamond cutter he knew, Kaplan. The cutter studied the diamond for twelve whole months.When he felt he was ready to start work, he discovered a flaw (瑕疵) . He had to begin his calculations all over again, or he might have made the stone useless. Six months passed, and Kaplan finally said to the owner, “I am ready to start my work. There will be one excellent diamond that will be parable one excellent diamond of first-class quality (质量) Kaplan waited a few more days until he felt he was in the best physical and mental (精神的) condition(条件) possible. He picked up his tools (工具) and held his breath as he made the diamond exactly as he promised.1.Joker found one of the biggest diamonds in the world_________.A.in a minuteB.at the foot of a big mountainC.in his own back yardD.in a garage (汽车库)2.A diamond dealer is a person ___________.A.in the diamond businessB.who stole diamondsC.who cuts diamondsD.who sells diamonds3.When the diamond was resold,____________.A.the dealer lost a lot of moneyB.Joker made some more moneyC.the dealer got 800, 000 dollarsD.Kaplan got 800,000 dollars4.The owner of the diamond thought that if the diamond was cut successfully it might be worth_________.A.$ 300, 000B.$ 500,000C.$ 300, 000D.$ 800,000,0005.Kaplan studied the diamond for____________.A.more than one and a half yearsB.more than half a yearC.over eight monthsD.more than nineteen months
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CACDA解析试题分析：文章介绍了一个好的钻石，切割是最重要的，能让钻石的价值成倍增加。1.C 细节题。根据第一段第一句Joker found one of the biggest diamonds in the world right in his own back yard.说明是在自己家后院发现的，故C正确。2.A 推理题。根据第二行He sold the stone to a diamond dealer他把宝石卖给a diamond dealer，说明a diamond dealer一定是做珠宝生意的人，故A正确。3.C 细节题。根据第一段3,4行the diamond was resold---this time for almost eight hundred thousand dollars.说明C正确。4.D 计算题。根据第一段3,4行the diamond was resold---this time for almost eight hundred thousand dollars.但是下文Once cut successfully, its value can increase a thousand times.说明如果切割合理，其价值将增加1千倍，那么D正确。5.A 计算题。根据第一段最后一句The cutter studied the diamond for twelve whole months.和第二段第三行Six months passed,第四行Kaplan waited a few more days说明超过了一年半，故A正确。考点：考查科普类阅读点评：本文是关于钻石的切割，注意文章的细节本文因为涉及到计算，所以计算题也较多。