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【简答题】
In times of economic crisis, Americans turn to their families for support. If the Great Depression is any guide, we may see a drop in our skyhigh divorce rate. But this won’t necessarily represent an increase in happy marriages. In the long run, the Depression weakened American families, and the current crisis will probably do the same. We tend to think of the Depression as a time when families pulled together to survive huge job losses. By 1932, when nearly one-quarter of the workforce was unemployed, the divorce rate had declined by around 25% from 1929. But this doesn’t mean people were suddenly happier with their marriages. Rather, with incomes decreasing and insecure jobs, unhappy couples often couldn’t afford to divorce. They feared neither spouse could manage alone. Today, given the job losses of the past year, fewer unhappy couples will risk starting separate households. Furthermore, the housing market meltdown will make it more difficult for them to finance their separations by selling their homes. After financial disasters family members also tend to do whatever they can to help each other and their communities. A 1940 book “The Unemployed Man and His Family”, described a family in which the husband initially reacted to losing his job “with tireless search for work.” He was always active, looking for odd jobs to do. The problem is that such an impulse is hard to sustain. Across the country, many similar families were unable to maintain the initial boost in morale(士气). For some, the hardships of life without steady work eventually overwhelmed their attempts to keep their families together. The divorce rate rose again during the rest of the decade as the recovery took hold. Millions of American families may now be in the initial stage of their responses to the current crisis, working together and supporting one another through the early months of unemployment. Today’s economic crisis could well generate a similar number of couples whose relationships have been irreparably(无法弥补地)ruined. So it’s only when the economy is healthy again that we’ll begin to see just how many broken families have been created. 小题1:In the initial stage, the current economic crisis is likely to __________. A.tear many troubled families apart B.bring about a drop in the divorce rate C.contribute to enduring family ties D.cause a lot of conflicts in the family 小题2:In the Great Depression many unhappy couples chose to stick together because_______. A.starting a new family would be hard B.they expected things would turn better C.they wanted to better protect their kids D.living separately would be too costly 小题3:In addition to job losses. What stands in the way of unhappy couples getting a divorce? A.Mounting family debts B.A sense of insecurity C.Falling housing prices D.Difficulty in getting a loan 小题4:What will the current economic crisis eventually do to some married couples? A.It will irreparably damage their relationship B.It will undermine their mutual understanding C.It will help strengthen their emotional bonds D.It will force them to pull their efforts together 小题5:What can be inferred from the last paragraph? A.The economic recovery will see a higher divorce rate B.Few couples can stand the test of economic hardships C.A stable family is the best protection against poverty. D.Money is the foundation of many a happy marriage
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【单选题】什么是相关子查询?以下描述正确的是()
A.
相关子查询是一种包含子查询的特殊类型的查询。
B.
相关子查询独立于外层语句(主查询)
C.
相关子查询的执行不需要提前取得父查询的值,只是作为父查询的查询条件
D.
相关子查询通过where子句的子查询返回内层查询的值作为查询条件,进而实现外层查询的查询结果
【单选题】下列关于子查询描述不正确的是。( )
A.
子查询通常与谓词 IN、EXIST及比较运算符结合使用。
B.
含有IN谓词的子查询中,IN子查询结果集可以是一个值也可以是多个值。
C.
含有Exists谓词的子查询中,如果子查询的结果集为非空,则Exists返回的值为真值。
D.
在比较子查询中,>All相当于大于All 子查询结果集中最小值。
【单选题】A rabid animal is most dangerous during the early stage of the disease because______.
A.
it becomes restless, nervous and violent
B.
its bite is fatal
C.
the potential danger of the sick animal may be ignored
D.
it will attack people at any time
【单选题】关于子查询的描述,正确的是
A.
嵌套子查询中,先执行内查询,再执行外查询
B.
嵌套子查询中,先执行内查询,再执行外查询
C.
嵌套子查询中,先执行内查询,再执行外查询
D.
相关子查询中,先执行外查询,再执行内查询
【单选题】关于相关子查询描述正确的是:
A.
子查询与外层查询无关
B.
子查询先执行,外层查询后执行
C.
子查询只执行一次
D.
外层查询返回的每一行记录都要执行一次子查询
【单选题】What was the role of religion at Harvard University during its early years?
A.
It was not influenced by any religion.
B.
It was heavily influenced by one religious group.
C.
It was not dominated by a single religious group.
D.
It was devoted only to religion.
【简答题】During the early years of an asset’s life, a company using an accelerated depreciation method, rather than straight-line, could expect a lower value for: A.Asset turnover. B.Shareholders’ equity. C.As...
【单选题】During the 1800's and early 1900's, new academic disciplines such as chemistry and physics made great headway.
A.
sacrifice
B.
forefront
C.
preconceptions
D.
progress
【多选题】以下关于子查询描述正确的是()
A.
子查询要用括号括起来
B.
需要返回一个值或一个值列表时,可以用子查询代替一个表达式。可以用子查询返回含有多个列的结果集以代替表或完成与连接查询操作相同的功能
C.
子查询不能检索包含数据类型为text或image的列
D.
子查询中也可以再包含子查询,嵌套最多可以达32层
【单选题】关于子查询的描述不正确的是( )
A.
使用IN(或NOT IN)的子查询返回的查询结果是一列零值或更多值。子查询返回结果之后,外部查询可以使用这些结果。
B.
子查询可由一个比较运算符引入。比较运算符可以是=、<>、>、=、<=、!>、!
C.
使用EXISTS(或NOT EXISTS)关键字引入一个子查询时,就相当于进行一次存在测试。子查询产生查询结果集。
D.
使用EXISTS(或NOT EXISTS)关键字引入一个子查询时,子查询实际上不产生任何数据;它只返回TRUE或FALSE值
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