概要：A computer can only do __what__ you have instructed it to do.A computer can do nothing __when__ you haven’t instructed it to work .A computer can only do something __after__ you have instructed it to do so.A computer does not know __how_ human beings constructed robots its new generation .8. 此题系2001年之（32）题 Visitors __________ not to touch the exhibits .A. will request B. request C. are requesting D. are requested答案 ：D 通过率 ：66%测试语言点 ：动词被动语态与主动语态的区别。要吸取的经验 ：requ
unin 14 Roots-听力完形,标签：高三英语复习教案,高三英语备课教案,http://www.67jx.comA computer can only do __what__ you have instructed it to do.
A computer can do nothing __when__ you haven’t instructed it to work .
A computer can only do something __after__ you have instructed it to do so.
A computer does not know __how_ human beings constructed robots ----
its new generation .
8. 此题系2001年之（32）题
Visitors __________ not to touch the exhibits .
A. will request B. request C. are requesting D. are requested
答案 ：D 通过率 ：66%
测试语言点 ：动词被动语态与主动语态的区别。
要吸取的经验 ：
request这个动词你可能不认识，但是只要掌握了动词被动语态与主动语态的句型，顾名思义，便会区别它们 。例句：
Visitors _are requested（are asked） not to touch the exhibits .
Visitors _request _ the guide not to show them around such a large hall with so many
exhibits within such a short time . It is to take them only half an hour to visit
the whole museum !
Visitors _will request_ the tour agency to make up for the loss of their time if there
is another twenty minutes’ delay during their visit to the second place of interest .
Visitors _are requesting _ the tour guide not to waste too much time on the exhibits
they are not interested in at all