下列物质中铁元素的质量分数最高的是()。 A.FeO B.Fe2O3 C.Fe3

题型:选择题

问题:

下列物质中铁元素的质量分数最高的是( )。

A.FeO

B.Fe2O3

C.Fe3O4

D.FeS2

考点:物质组成元素的质量比化学式的写法和意义物质组成元素的质量分数化合价的求法
题型:选择题

关于对位似图形的表述,下列命题正确的是______.(只填序号)

①相似图形一定是位似图形,位似图形一定是相似图形;

②位似图形一定有位似中心;

③如果两个图形是相似图形,且每组对应点的连线所在的直线都经过同一个点,那么,这两个图形是位似图形;

④位似图形上任意两点与位似中心的距离之比等于位似比.

题型:选择题

属于肝脏代谢功能的有()

A.雌激素的灭活

B.前白蛋白的合成

C.FⅡ的合成

D.胆固醇的合成

E.分泌胰岛素维持血糖稳定

题型:选择题

人工采摘咖啡豆的优点是()。

A、成本费用低

B、采摘量大

C、品质较好

D、采摘速度快

题型:选择题

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. Taken

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 word "savvy" (Line4, Para1) 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 summary of this passage? [ ]

A. Secret Savers

B. Love Is What It's Worth

C. Banking Honesty

D. Once Bitten, Twice Shy 65.

题型:选择题

医院健康促进涉及三级预防中的()

A.二级预防

B.三级预防

C.一、二级预防

D.二、三级预防

E.一、二、三级预防

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