职称英语理工B级完形填空练习题

　　Today, the world wide web can be used both to retrieve information and to make it 51 to others. Information 52 on webpages in viewed by 53 of browser. The sources of in- formation linked in this way can be located on any computer 54 is also part of the web. Each information source 55 to an indefinite number of other webpages. Hypertext and hyperlinks allow users acting as receivers of information to wander form one source of information to another, 56 for themselves which information they wish to 57 to their browser and which links they want to 58 .

　　The addresses of webpages can be found by using the many hundreds of general and specialized search engines which provide 59 to databases which hold information on them. Once a webpage has been found, hyperlinks may point 60 other places of interest on the web. Addresses of webpages also 61 in other more conventional media such as magazines, newspapers and television programs, and on posters. WebPages, in their turn, facilitate access to information made available by other 62 of media, for example, collections held in libraries or programs broadcast on television.

　　Most webpages offer interactive opportunities which go beyond moral allowing visitors freedom as to when and how they visit a page and where they might choose to go next. Feedback can be kept formal via a questionnaire which can be filled 63 , or informal by providing an address for e-mail or even by 64 a digital quest book for comments left for other users to read. Although all webpages are protected so that unauthorized visitors cannot make unsolicited changes to them, it is also possible to 65 access to pages on the Internet to those holding a password.

　　51. A. available B. obtainable C. achievable D. amicable

　　52. A. displayed B. displaying C. displayable D. is displayed

　　53. A. medium B. vehicle C. agent D. means

　　54. A. what B. that C. that D. it

　　55. A. maybe linked B. may be linked C. may is linked D may linked

　　56. A. deciding B. decided C. decide D. to decided

　　57. A. transition B. transmit C. transform D. transfer

　　58. A. flip B. slip C. skip D. skim

　　59. A. success B. access C. assess D. possess

　　60. A. about B. on C. to D. at

　　61. A. to appear B. appeared C. appearing D. appear

　　62. A. modes B. forums C. shapes D. forms

　　63. A. up B. out C. with D. over

　　64. A. install B. installed C. installing D. installs

　　65. A. constrain B. confine C. restrain D. limit

　　参考答案

　　51. A 52. A 53. D 54. B 55. B 56. A 57. D 58. C 59. B 60. C 61.D 62. D 63. B 64.C 65. D