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设随机变量X服从正态分布 N（μ,σ2) ，则随σ的增大，概率P {〡X-μ〡＜σ}应_______

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Mike’s parents gave hkn a call yesterday．→Mike__________a phone call from his parents yesterday．

设指针变量p指向单链表中结点A，指针变量s指向被插入的结点X，则在结点A的后面插入结点X需要执行的语句序列：s-＞next=p-＞next; _________________;。

？？（1）Each child has his individual pattern of social, as well as physical, development. Some of it depends on his home life and his home life and his relationships with the people who love him.（2）Children in large families learn how to get along with others through normal brother-sister play and tussles（争斗）. An only child, on the other hand, may have to learn his lessons in social living through hard experiences on the playground or in the classroom.（3）Twins who always have one another to lean on may be slow in responding to others because they do not need anyone else.
（4）A child who is constantly scolded（责骂）and made to fell he does everything wrong may have a difficult time developing socially. He may be so afraid of displeasing the adults around him that he keeps to himself(where he can&39;t get into trouble),（5）or he may take the oppositeroute（道路）and go out of his way to create trouble. Like the is olated child, he too may return to infantile pleasures, developing habits that will satisfy him, but create barriers toward social contact.
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As a man was passing the elephants, he suddenly stopped. He wondered why these huge elephants were being held byonly a small rope tied to _61 (they) front leg. No chains.no cages(笼子）？62 (clear, the elephants could,at any time, break away from the ropes,but they did not.
He saw a trainer nearby and asked why these 63 (animal just stood there and made no attempt to get away. “Well&39;” 64 trainer said, “when they were very young and much 65 (small, we used the same size ropeto tie them and, at that age, it was enough to hold them. As they grow up, they are conditioned to believe they cannot breakaway. They believe the rope can still hold them, so they never try to break free.”
The man was 66 (surprise. These elephants could at any time break free from the ropes but because they67 (believe they couldn’t, they were stuck right where they were.
Like the elephants, how many of us go through life with a belief 68 we cannot do something, simply becausewe failed at it once before？
Failure is part of 69 (team. We should never give 70 the struggle in life.
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