合成胆汁酸的原料是() A.乙酰CoA B.脂肪酸 C.甘油三酯 D.胆固醇 E.葡

题型:单项选择题

问题:

合成胆汁酸的原料是()

A.乙酰CoA

B.脂肪酸

C.甘油三酯

D.胆固醇

E.葡萄糖

考点:生物化学脂类代谢脂类代谢题库
题型:单项选择题

看近物时,使晶状体变厚的主要原因是

A.睫状小带紧张

B.睫状肌紧张

C.瞳孔括约肌舒张

D.睫状环扩大

E.瞳孔括约肌收缩

题型:单项选择题

Jack Brown,an office worker,lives in Washington.He inherited(继承)  a million dollars when he was 23,but he wasn’t happy at all.When his college friends were looking for their jobs,he didn’t have to.Jack decided to living a simple life like everyone else.He gave $l0,000 of his money to a charity(慈善机构)to help poor children live a better life.Today he is 36.He still wears cheap shoes and clothes and drives a small car only,but he is Very happy.

Up to now Jack has helped some children from poor countries all over the world,by sending them each$200 a month.The money was used for the children’s study, food, medicine and clothing.Jack receives a report each year on the children’s progress(进步).They can write to each other.but usually the children do not speak English.

When Jack first heard about these children,he wanted to help them.“It was nothing special,” he said.“Until  I  went to these countries and met the children I was helping,I didn’t know anything about their life.” Once Jack went to meet a little girl in Africa.He said that the meeting was Very exciting.“When I met her.I felt very ,very happy."he said.“ I saw that the money was used for a good cause.It brought me happiness.I want to do everything I can to go on helping those children.”

小题1:Jack didn’t need to look for a job ___________.

A.before he went to college

B.after he went to Africa

C.because he got one million dollars

D.before he received a report小题2:Jack has sent them each $200 a month to help some poor children _______.

A.only in Washington

B.only in England

C.only in Africa

D.around the world小题3:Jack learned about the children’s progress by ________.

A.visiting them each year

B.getting a report every year

C.staying with them

D.talking to them in English小题4:The underlined(划线的)words “for a good cause ”means“­­­­­­­­________” in Chinese.

A.施舍

B.行善

C.优惠

D.赏赐小题5:What’s the main idea of the story?

A.Help others,and you will feel happy.

B.It’s necessary to write letters to poor children.

C.Live a simple life,and you can give others help.

D.Enjoy life.

题型:单项选择题

世界卫生组织(WHO)规定每年的哪一天为不吸烟日()

A.4月15日 

B.5月15日 

C.5月31日 

D.6月15日 

E.11月19日 

题型:单项选择题

哪项预防艾滋病的方法是不正确的()

A.性关系专一

B.对被艾滋病毒感染者的血液污染的物品及时消毒

C.感染的妇女不怀孕可防止后代感染

D.将艾滋病人隔离起来保护大家

题型:单项选择题

Token Bus网中结点获得令牌之间的最大时间间隔( ),可以用于有较高实时性要求的应用环境。

A.随机值

B.满足正态分布

C.一定

D.按上次传输数据量大小而定

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