下列电器设备中，主要利用电流热效应进行工作的是 A．话筒 B．电话 C．电视机

At 18, many American young people go off on their own. They go away to college or find full-time jobs, and they often pay for their own apartments. Some get married and start families. This independence（独立) is learned from childhood.

From an early age, American children learn to do things by themselves. Children as young as 2 begin to put away their toys and dress themselves. At 3, many children do simple chores like setting the table.

Using money in the right way is also taught early. As soon as a child understands the value of money, he or she receives a weekly allowance. This is used for things the child wants, like toys or treats. The child can spend or save it, usually with little help or advice from parents. If the child wants more money, it must be earned by doing extra chores.

Children are taught early in life to think for themselves. They are allowed to make some decisions

and make mistakes. Failure often teaches more than success.

小题1:. Many young American people begin to live on themselves ________ .

A．at the age of eighteen

B．from an early age

C．after they get married

D．when they find jobs小题2: An American child learns to ________ at the age of 2.

A. do a lot of chores  B. put on their own clothes     C. study for a test        D set the table

小题3: The underlined word “allowance” means ________ .

A．pocket money

B．present

C．prize

D．toy小题4: A child can get some more money by ________ .

A．understanding the value of money

B．doing a lot of homework

C．reading a lot of books

D．doing some more chores小题5: Which is NOT true according to the passage?

A．American children learn to be independent from an early age.

B．American children always use or save their money with the help of their mother.

C．American children are allowed to make some decisions and mistakes.

D．Failure is needed in children’s life as well as success.

其他改良种用马

设某一累进利率债券的面额为1000元，持满一年的债券利率为7%，每年利率递增率为1%，那么持满5年的利息为（）元。

A．350 

B．400 

C．402 

D．450

社会治安综合治理责任制主要包括社会治安综合治理领导责任制、目标管理责任制和（）三部分内容。

A、倒查问责制

B、社会治安综合治理一票否决权制

C、“一岗双责”制

D、晋职晋级征求综治部门意见制

女性，16岁。受凉后咳嗽、喘息3天，自服氨茶碱，症状无缓解。体检：大汗，两肺可闻及哮鸣音，心率120次／分，有奇脉，胸腹矛盾运动。既往有哮喘病史。最可能的诊断是（）

A.急性支气管炎

B.心源性哮喘

C.过敏性肺炎

D.重症支气管哮喘

E.慢性喘息性支气管炎急性发作