听力原文: 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 50 families to find out just how much more.
Lewis and his co-workers carried out their study by videotaping 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 brothers and sisters. 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, it's often the case that it's 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."
(33)
A.To report on the findings of a study.
B.To give information about family problems.
C.To show the relationship between parents and children.
D.To teach parents ways to keep order at the dinner table.
第1题
A.0.5MPa
B.5MPa
C.40%极限抗压强度
D.50%极限抗压强度
第2题
A.0.5MPa
B.5MPa
C.40%极限抗压强度
D.50%极限抗压强度
第3题
A.0点
B.0.5MPa
C.40%极限抗压强度
D.60%极限抗压强度
第4题
A.O点
B.0.5MPa
C.40%极限抗压强度
D.60%极限抗压强度
第5题
A.下降段只能在刚度不大的试验机上测出
B.混凝土压应力达到最大时,试件并不立即破坏
C.曲线包括上升段和下降段两部分,且上升段是一条直线
D.不同强度等级的混凝土有着不同形式的应力-应变曲线
第6题
混凝土一次短期加载时的压应力一应变曲线,下列叙述正确的是_______。
A.上升段是一条直线
B.下降段只能在强度不大的实验机上测出
C.混凝土强度高时,曲线的峰部曲率较小
D.混凝土压应力达到最大时,并不立即破坏
第7题
A.上升段是一条直线
B.下降段只能在刚度不大的试验机上测出
C.混凝土强度高时,曲线的峰部曲率较小
D.混凝土正应力达到最大时,并不立即破坏
第8题
A.该曲线仅适用于混凝土构件的正截面承载力计算
B.该曲线不适用于高强混凝土
C.该曲线混凝土的峰值压应变ε0=0.002,极限压应变εcu=0.0033
D.混凝土强度越高,峰值应变和极限应变越小
第9题
A.该曲线仅适用于混凝土构件的正截面承载力计算
B.该曲线不适用于高强混凝土
C.该曲线混凝土的峰值压应变ε0=0.002,极限压应变εcu=0.0033
D.混凝土强度越高,峰值应变和极限应变越小
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