Passage 7?（福建省三明一中2010屆高三上學(xué)期第二次月考） 完形填空

What causes your computer a slow one? The problem lies with changes that occur to the PC's software. The 2 most ? 51 ? causes of slowdown (along with easy solutions) are:?Registry errors ?- ?the most common problem.

Every ? ?52 ??you load a program, game or file, your PC's software registry is updated with new instructions needed to operate that item. ? 53 ? , when the item is removed, these instructions usually remain on your PC. ?Every time you run your computer it ? 54 ? to carry out these instructions but, because the related program can't be found, it causes a registry error. ?Your PC is doing a lot ? 55 ? work than it should be and the result is a significantly ? 56 ? computer.

One of the best ways to manage this is with a ??57 ???little tool. This program scans, identifies and ? 58 ? registry errors - resulting in a computer that's a lot more like it was when you ? 59 ? bought it.?

Spyware and viruses

Spyware and viruses are software programs that are loaded on your computer ? 60 ? your knowledge or permission. ?They have various purposes, ?? 61 ? :?

Changing the default search engine in your browser ;

Tracking your web surfing ? ?62 ? ;

Stealing your personal ? ?63 ??.

Most spyware and viruses get onto our computers through files that we ? ?64 ? ?from the internet or as attachments to emails. They tend to ? 65 ? up a lot of computing power and as a ? 66 ? will significantly slow down the computer.

The simple rule of thumb to follow is to never download any ? 67 ? software programs from companies you do not know and trust, especially screensavers, emoticons and the ??68 ? . In addition, make sure you have a good anti-virus / spyware removal software running at ? 69 ?? times.

Follow the above advice and your PC should stay fast and ? 70 ? .

51. A. common B. ordinary C. special D. normal

52. A. day B. week C. time? D. second

53. A. Although B. However C. Though D. And

54. A. costs B. keeps C. takes D. tries

55. A. more? B. much C. most D. least

56. A. faster B. slower? C. quicker D. stronger

57. A. easy B. funny C. neat? D. dull

58. A. finds B. sees C. fixes? D. stores

59. A. first? B. next C. last D. second

60. A. without? B. with C. between D. for

61. A. including B. includes C. included D. include

62. A. abilities B. habits? C. shortcomings D. faults

63. A. money B. possession C. happiness D. information?

64. A. read B. search C. write D. download?

65. A. make B. turn C. take D. cut

66. A. rule B. hobby C. result? D. start

67. A. free? B. cheap C. expensive D. useful

68. A. thing B. like C. difference D. interest

69. A. each B. every C. some D. all?

70. A. safe B. dangerous C. important D. useful

答案 ?51-70 ? ACBDA ?BCCAA ?ABDDC ? CABDA