试题与答案

方程yy″+(y′)2=0满足y(0)=1,的特解为______.

题型:填空题

题目:

方程yy″+(y′)2=0满足y(0)=1,

的特解为______.

答案:

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题型:阅读理解

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     Researchers in London and Bristol have found that men are particularly likely to yield to depression if their

partners are also depressed.

     The findings highlights the importance of paying attention to the partners of depressed mothers as young

children themselves are vulnerable to social problems if both parents are depressed.

     Researchers in London and at the university of Bristol launched their study to investigate whether family

structure affects the likelihood of depression in men around the time their child is born. They looked at men

from traditional families, men with children from a previous relationship, men whose parents had children by

a former partner, and men who were not living with their partners.

     All 7,018 participants filled out a questionnaire on depression, and answered the questions about their age,

education level and employment status. Details about the quality of their relationship with their partners,

networks of friends and previous life events were also recorded.

     About 3.5 percent of the men and 13 percent of their partners suffered depression around the time their

child was born. In comparison, men in step-families or who were not living with their partners were twice

as likely to get depressed as those in traditional families. This could be explained by other factors that are more

common in non-traditional families, such as poor education and relationship conflicts.

     Even allowing for all these factors, however, the partners of women who were suffering from perinata (围

产期的) depression were significantly more likely to become depressed themselves, the researchers report in

an American Journal. Ten percent of women who were depressed had depressed partners. For the healthy

women, the figure was only 2.6 percent. Previous research suggests that families with two depressed partners

may need special attention. A researcher in Atlanta has found that primary school children with two troubled

parents have difficulty relating to their peers. "It's extremely important to look at the whole family," she says.

1. What can we conclude from paragraph 1 and 2?

A. Men often mistreat their children

B. Depressed women often have depressed partners

C. All young children are vulnerable to social problems

D. Women with children often have depressed partners

2. Researchers in London and Bristol carry out such an investigation in order to _____.

A. see what kind of family environment is ideal for children to grow up in

B. investigate why so many men get depressed when a child is born

C. study whether family structure affects depression in men when child is born

D. see whether it is true that behind every depressed man there is a depressed woman

3. What kind of man is least likely to get depressed when their child is born?

A. Men in step-families

B. Men in traditional families

C. Men not living with their partners

D. Men in non-traditional families

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