[题目]I was surprised to find the snack shops around the school empty; the students everything!A.had been buying B.had boughtC.have bought D.have been buying 题目和参考答案——青夏教育精英家教网—

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【题目】I was surprised to find the snack shops around the school empty; the students everything!

A.had been buying B.had bought

C.have bought D.have been buying

【答案】B

【解析】

试题分析：考查时态辨析。根据句意是过去某一时间之前已经完成的事情，故采用过去完成时。句意：我惊讶地发现学校周围的零食店都已经空了；学生们买完了所有的东西。根据句意可以判断，故选B。

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Technological change is everywhere and affects every aspect of life, mostly for the better. However, social changes are brought about by new technology are often mistaken for a change in attitudes.
An example at hand is the involvement of parents in the lives of their children who are attending college. Surveys (调查) on this topic suggests that parents today continue to be “very” or “somewhat” overly-protective even after their children move into college dormitories. The same surveys also indicate that the rate of parental involvement is greater today than it was a generation ago. This is usually interpreted as a sign that today's parents are trying to manage their children's lives past the point where this behavior is appropriate.
However, greater parental involvement does not necessarily indicate that parents are failing to let go of their “adult” children.
In the context (背景) of this discussion, it seems valuable to first find out the cause of change in the case of parents' involvement with their grown children. If parents of earlier generations had wanted to be in touch with their college-age children frequently, would this have been possible? Probably not. On the other hand, does the possibility of frequent communication today mean that the urge to do so wasn't present a generation ago? Many studies show that older parents - today's grandparents - would have called their children more often if the means and cost of doing so had not been a barrier.
Furthermore, studies show that finances are the most frequent subject of communication between parents and their college children. The fact that college students are financially dependent on their parents is nothing new; nor are requests for more money to be sent from home. This phenomenon is neither good nor bad; it is a fact of college life, today and in the past.
Thanks to the advanced technology, we live in an age of bettered communication. This has many implications well beyondthe role that parents seem to play in the lives of their children who have left for college. But it is useful to bear in mind that all such changes come from the technology and not some imagined desire by parents to keep their children under their wings.
（1）The surveys inform us of ______.
A.the development of technology
B.the changes of adult children's behavior
C.the parents' over-protection of their college children
D.the means and expenses of students' communication
（2）The writer believes that ______.
A.parents today are more protective than those in the past
B.the disadvantages of new technology outweigh its advantages
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D.parents' changed attitudes lead to college children's delayed independence
（3）What is the best title for the passage?
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B.Dependence or Independence
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D.College Management or Communication Advancement
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