输卯管妊娠最常见的病因是( ) A．输卵管发育或功能异常 B．慢性输卵管炎 C．输卯

阅读理解。

    What makes people happier, money or having happy friends and neighbors? Scientists have found an

 answer as part of a study.

     The new study found that friends of happy people had a greater chance of being happy themselves.

 And the smaller the distance between friends, the larger the effect they had on each other's happiness (幸

 福).

     For example, a person was 20% more likely to feel happy if a friend living within one and a half

 kilometers was also happy. Having a happy neighbor who lived next door increased a chance of being

 happy by 34%. The effects (影响) of friends' happiness lasted for up to a year.

     The scientists found sadness (悲伤) also spread (传播) among friends, but not as much as happiness.

 People take three degrees out of separation (间隔) still had an effect on a person's happiness. Three

 degrees of separation means the friend of a friend of a friend  .

     The study showed that having an extra five thousand dollars increased a person's chances of becoming

  happier by about 2%. But the scientists found that the influence of a friend of a friend of a friend  can be

  greater than that.

     Another finding is that people who are married or work together do not have as much of an effect on

 happiness as friends do.

1. Your happiness has an effect on _____ if Mike is Mary's friend, Mary is Jenny's friend, Bob is Lucy's

    friend and you are Bob's friend.

    A. Mike      

    B. Mary          

    C. Lucy              

    D. Jenny

2. Which of the following has the least effect on happiness according to this article?

    A. Money.    

    B. Workmates.    

    C. Happy friends.    

    D. Neighbors.

3. From this article we know _____.

    A. who's the happiest            

    B. what's happiness

    C. what makes people happier      

    D. when people are happy

妊娠期发生、诊断，易导致巨大儿发生（）

A．妊娠期糖尿病 

B．肝内胆汁淤积 

C．妊高征 

D．HELLP综合征 

E．重症肝炎

质量为900g的物体静止在水平地面上，受到的重力为多少N？（g=10N/kg）

治疗心室纤颤的最有效措施是（）

A.吸氧

B.镇静

C.静注利多卡因

D.气管内滴注肾上腺素

E.电除颤

有毒品在水中的溶解度越大，其危险性年纪大，因为人体内含有大量水分，所以越易溶解于水的有毒品越易被人体吸收。