2010年清原高中英语组高考完形填空题专题训2.doc

2010年清原高中英语组高考完形填空题专题训练(含详解) 2 完形填空（共20小题；每小题1.5分，满分30分）阅读下面短文，掌握其大意，然后从36—55题各题所给的四个选项（A、B、C和D）中，选出可以填入空白处的最佳选项。 Throughout history man has had to accept the fact that all living things must die. But people now live longer than they 36 . Yet, all living things still show the 37 of aging, which will eventually 38 death. Aging is not a disease, but as a person passes maturity (成熟期), the cells of the body and the 39 they form do not function as well as they 40 in childhood and teenage years. The body provides less 41 against disease and is more 42 to have accident. A number of related causes may 43 aging. Some cells of the body have a fairly long life, but they are not 44 when they die. As a person ages, 45 of brain cells and muscle cells decreases. 46 body cells die and are replaced by new cells. In an aging person the 47 cells may not be as workable or as capable 48 growth as those of a young person. Another 49 in aging may be changes within the cells 50 . Some of the protein chemicals in cells are known 51 with age and become less elastic (有弹性的). This is why the skin of old people wrinkles (皱纹) and 52 . This is also the reason why old people 53 in height. There may be other more important chemical changes in the cells. Some complex cell chemicals, such as DNA and RNA, store and 54 information that the cells need． Aging may affect this 55 and change the information-carrying molecules so that they do not transmit the information as well. 36. A．would B．be used to C．used to D． used 37. A．function B．effect C．affect D． sign 38. A．lead in B．give in C．run into D． result in 39. A．hands B．feet C．heart D． organs 40. A．do B．has done C．did D． had done 41. A．energy B．protection C．vigor D． power 42. A．likely B．probable C．possible D． alike 43. A．attend to B．contribute to C．add to D． devote to 44. A．replaced B．reborn