16．As any homemaker who has tried to keep order at the dinner table knows，there is far more to a family meal than food．Sociologist Michael Lewis has been studying 50families to find out just how much more．
Lewis and his co-workers carried out their study by videotaping （录像） the families while they ate ordinary meals in their own homes．They found that parents with small families talk actively with each other and their children．But as the number of children gets larger，conversation gives way to the parents'efforts to control the loud noise they make．That can have an important effect on the children．"In general the more question-asking the parents do，the higher the children's IQ scores，"Lewis says．"And the more children there are，the less question-asking there is．"
The study also provides an explanation for why middle children often seem to have a harder time in life than their siblings （兄弟姐妹）．Lewis found that in families with three or four children，dinner conversation is likely to center on the oldest child，who has the most to talk about，and the youngest，who needs the most attention．"Middle children are invisible，"says Lewis．"When you see someone get up from the table and walk around during dinner，chances are it's the middle child．"There is，however，one thing that stops all conversation and prevents anyone from having attention："When the TV is on，"Lewis says，"dinner is a non-event．"
67．The writer's purpose in writing the text is toA．
A．report on the findings of a study
B．give information about family problems
C．teach parents ways to keep order at the dinner table
D．show the relationship between parents and children
68．Parents with large families ask fewer questions at dinner becauseB．
A．they are busy serving food to their children
B．they are busy keeping order at the dinner table
C．they have to pay more attention to younger children
D．they are tired out having prepared food for the whole family
69．By saying"Middle children are invisible"in paragraph 3，Lewis means that middle childrenA．
A．get the least attention from the family
B．have to help their parents to serve dinner
C．are often kept away from the dinner table
D．find it hard to keep up with other children
70．Which of the following statements would the writer agree to？D
A．It is important to have the right food for children．
B．It is a good idea to have the TV on during dinner．
C．Elder children should help the younger ones at dinner．
D．Parents should talk to each of their children frequently．
分析 本文属于说明文阅读，作者通过这篇文章主要向我们描述了社会学家对家庭做了一个研究，发现了许多特别的家庭现象．
解答 67．A．主旨大意题，从第一自然段Sociologist Michael Lewis has been studying 50 families to find out just how much more．以及后面全都是讲这个研究有什么发现，故选A．
68．B．细节理解题，由第二段的But as the number of children gets larger，conversation gives way to the parents'efforts to control the loud noise they make．（孩子们太吵了，他们得加以控制），可以看出他们得保证就餐秩序；故选B．
69．A．细节理解题，从第三自然段Lewis found that in families with three or four children，dinner conversation is likely to center on the oldest child，who has the most to talk about，and the youngest，who needs the most attention可知有三四个孩子的家庭，谈论的中心要么是最大的，要么是最小的；故选A．
70．D．推理判断题．由第二段"In general the more question-asking the parents do，the higher the children's IQ scores，"整篇文章的重点也是说明父母和子女交流的重要性．故选D．
点评 考察学生的细节理解和推理判断能力，做细节理解题时一定要找到文章中的原句，和题干进行比较，再做出正确的选择．在做推理判断题不要以个人的主观想象代替文章的事实，要根据文章事实进行合乎逻辑的推理判断．
