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 encyclopaedia set. Now those【C1】______seem hopelessly old fashioned; this Christmas, there were a lot of【C2】______computers under the tree. 【C3】______that computers are the key to success, parents are also frantically insisting that children【C4】______taught to use them in school—as early as possible.
    The problem for schools is that when it【C5】______computers, parents don’t always know best. Many schools are【C6】______parental impatience and are purchasing hardware【C7】______sound educational planning so they can say, " Ok, we’ ve moved into the computer age. " Teachers【C8】______themselves caught in the middle of the problem—between parent pressure and【C9】______educational decisions. Educators do not even agree【C10】______how computers should be used. A lot of money is going for computerized educational materials【C11】______research has shown can be taught【C12】______with pencil and paper. Even those who believe that all children should【C13】______to computers, warn of potential【C14】______to the very young.
    The temptation remains strong largely because young children【C15】______so well to computers. First graders have been【C16】______willing to work for two hours on math skills. Some have an attention span of 20 minutes. 【C17】______school can afford to go into computing, and that creates【C18】______another problem: a division between the haves and have-nots. Very few parents are agitating【C19】______computer instruction in poor school districts, 【C20】______there may be barely enough money to pay the reading teacher.
【C4】

选项 A、are
B、be
C、are being
D、were

答案B

解析 insist加that从句时,从句用虚拟语气句型:insist that…(should)be/do sth.。
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