题目

一个几何体的三视图如图所示，则该几何体的体积为 A．π             B. C.              D. 答案：D完形填空。 　　 1 all the things we eat and drink water is the 2 important (重要). Not 3 people understand (明白,懂) this, but it is quite 4 . The human body can go without food for a long time, 5 two or three days without water usually make people die. 　　Many people do not understand 6 water the human body (人体) needs to work and they do not drink 7 water especially (特别是) in hot weather. Most people drink only when they 8 drink. But in fact (实际上) they often need 9 water especially when they have had sport. 　　A man's body is 65 to 75 percent (百分比) water. If we do not have enough water, we feel tired (累) and 10 ill (病). (1)  [　　] A．AtB．By C．ForD．Of (2)  [　　] A．muchB．more C．mostD．even (3)  [　　] A．someB．many C．littleD．every (4)  [　　] A．factB．real C．trueD．easy (5)  [　　] A．andB．or C．thenD．but (6)  [　　] A．how manyB．how much C．if manyD．if much (7)  [　　] A．anyB．some C．littleD．enough (8)  [　　] A．want toB．try to C．in needD．like (9)  [　　] A．plentyB．a lot C．lotsD．more (10)  [　　] A．mayB．may be C．mustD．is