糖异生途径中的关键酶是 A．HMG-CoA还原酶 B．6-磷酸果糖激酶-1 C．果糖

甲的一头牛走失，乙牵回关人自家牛棚，准备次日寻找失主。当晚牛棚被台风刮倒，将牛压死。乙将牛肉和牛皮出售，分别得款500元和100元。请人屠宰及销售，支出100元。下列哪一种说法是正确的？（）

A.甲有权要求乙返还一头同样的牛

B.甲有权要求乙返还500元

C.甲有权要求乙返还600元

D.甲有权要求乙按该牛的市价赔偿1000元

阅读理解.

      According to a recent survey on money and relationships,36% of people are keeping a

bank account from their partner.While this financial unfaithfulness may appear as distrust in

a relationship,in truth it may just be a form of financial protection.With almost half of all

marriages ending in divorce,men and women are realizing they need to be financially savvy,

regardless of whether they are in a relationship.

      The financial hardship on individuals after a divorce can be extremely difficult,even more

so when children are involved.The lack of permanency in relationships,job and family life

may be the cause of a growing trend to keep a secret bank account hidden from a partner,

in other words,an"escape fund"．

      Margaret's story is far from unique.She is a representative of a growing number of

women in long－term relationships who are becoming protective of their own earnings.Every

month on pay day,she banks hundreds of dollars into a savings account she keeps from her

husband.She has been doing this throughout their six－year marriage and has built a nest egg

worth an incredible$100,000.Margaret says if her husband found about her secret savings

he'd be hurt and would take this as a sign that she wasn't sure of the marriage."He'd think it

was my escape fund so that financially I could afford to get out of the relationship if it went

wrong.I know you should approach marriage as being forever and I hope ours is,but you

can never be sure."

     Like many of her fellow secret savers,Margaret was hurt in a former relationship and has

since been very guarded about her own money.

     Coming clean to your partner about being a secret saver may not be all that bad.Take

Colleen for example,who had been saving secretly for a few years before she confessed to

her partner."I decided to open a savings account and start building a nest egg of my own.I

wanted to prove to myself that I could put money in the bank and leave it there for a rainy

day."

1. The trend to keep a secret bank account is growing because________.

A．"escape fund" helps one through rainy days

B．days are getting harder and harder

C．women are money sensitive

D．financial conflicts often occur

2．The underlined word "savvy" in Paragraph 1 probably means________.

A．suspicious

B．secure

C．wise

D．simple

3．Which inference can we make about Margaret?

A．She is a unique woman.

B．She was once divorced.

C．She is going to retire.

D．She has many children.

4. The author mentions Colleen's example to show________.

A．any couple can avoid marriage conflicts

B．privacy within marriage should be respected

C．everyone can save a fortune with a happy marriage

D．financial disclosure is not necessarily bad

5. Which of the following is the best title of this passage?______.

A．Secret savers

B．Love is what it's worth

C．Banking honesty

D．Once bitten,twice shy

腕管

产生超声波的必要条件是什么？

原料油中（）含量和干点上升，会加速催化剂的结焦。

A、烷烃

B、烯烃

C、环烷烃

D、芳香烃