There was a time when parents who wanted an educational present for their children would buy a typewriter, a globe or an encyclo

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问题    There was a time when parents who wanted an educational present for their children would buy a typewriter, a globe or an encyclopedia set.
   Now those  【21】______  seem hopelessly old-fashioned: this Christmas, there were a lot of  【22】______  computers under the tree.  【23】______  that computers are their key to success, parents are also frantically insisting that children  【24】______  taught to use them on school—as early as possible. The problem for schools is that when it  【25】______  computers, parents don’t always know best. Many schools are  【26】______  parental impatience and are purchasing hardware without  【27】______  educational planning, so they can say, OK, we’ve moved into the computer age.  Teachers  【28】______  themselves caught in the middle of the problem — between parent pressure and  【29】______  educational decisions.
   Educators do not even agree  【30】______  how computers should be used. A lot of money is going for computerized educational materials  【31】______  research has shown can be taught  【32】______  with pencil and paper. Even those who believe that all children should  【33】______  to computer warn of potential  【34】______  to the very young.
   The temptation remains strong largely because young children  【35】______  so well to computers. First graders have been  【36】______  willing to work for two hours on math skills. Some have an attention span of 20 minutes.
     【37】______  school, however, can afford to go into computing, and that creates  【38】______  another problem: a division between the have’s and havenot’s. Very few parents ask  【39】______  computer  instruction in poor school districts,  【40】______  there may be barely enough money to pay the reading teacher.
【38】

选项 A、already
B、of course
C、in addition
D、yet

答案D

解析 本小题要求根据上下文的内容选择在意义和结构上都正确的词语填入空白处。Mready意思为“已经”,of course意思为“当然”,in addition意思为“除此之外还……”。而yet的用法比较复杂,应注意以下几点:①用在否定句中,表示“还(没有)”。如:I’m not quite clear yet about this question.(我还不太明白这个问题。)②用在疑问句中,表示“已经”。如:Have you finished it yet?(你已经做完了PH?)③表示“仍然,还在,还得”。如:
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