下列过程中,涉及肽键数量变化的是[ ] A.洋葱根尖细胞染色体的复制 B.用纤维

题型:选择题

问题:

下列过程中,涉及肽键数量变化的是[ ]

A.洋葱根尖细胞染色体的复制

B.用纤维素酶处理植物细胞

C.小肠上皮细胞吸收氨基酸

D.糖类代谢中间产物与氨基连接形成新的氨基酸

考点:蛋白质的结构
题型:选择题

从民主方式上看,雅典民主制更接近以下哪一制度     (  )

A.英国君主立宪

B.美国民主共和

C.中国基层民主选举

D.中国人民代表大会制度

题型:选择题

痴呆痰浊蒙窍证的病机为

A.素体阳虚,阴寒凝滞,气血痹阻,心阳不振
B.心气不足,阴血亏耗,血行瘀滞
C.血行瘀滞,胸阳痹阻,心脉不畅
D.肝失疏泄,气机郁滞,心脉不和
E.阳气虚衰,胸阳不振,气机痹阻,血行瘀滞

题型:选择题

阅读理解。

      Speaking in public is most people's least favorite thing. The reason is that we're all afraid of making

fools of ourselves. The more important the speech is, the more frightened we become.

     But stop biting your finger-nails. Public speaking is easy. It's just plain talking, and you talk all the time.

Public speaking is not a "gift" like musical talent or being able to draw. Anybody who can talk can speak in

public. Here are some tips:

     Keep it simple. Your audience is going to learn one or two from your main ideas by heart. If you can't

express, then your speech is not focused well enough. And if you don't have a clear idea of what you want

to say, then your audience will have no interest in your speech. Get organized. No matter how long or short

your speech is, you'd better get your materials in order: how you're going to start, what major points you

want to make and how you're going to close. You may often write the last sentence first. When you know

what your aim is, you can choose any ways to get there. A strong close is powerful. The last thing you say

is what your audience will most likely remember.

     Keep it short. The standard length of a vaudeville (杂耍) act was 12 minutes. If all those troupers (演员)

want to sing and dance, they may make the audience bored. So make your speech short.

1. Why does the author say "Public speaking is easy."?

A. Because he considers that public speaking is just to say something in plain speech.

B. Because he considers that when someone speaks in public, he doesn't bite his finger-nails.

C. Because he considers that people do public speaking all the time.

D. Because he considers that people are not afraid of public speaking.

2. What does the author teach us here?

A. Not to make fools of ourselves.

B. How to make a speech.

C. To talk all the time.

D. How to have a clear idea when you speak.

3. In the author's opinion, how can you make your audience have interest in your speech?

A. You must make your audience learn your main ideas by heart.

B. You must say what your audience will most likely remember.

C. You must have a clear idea of what you want to say.

D. You must write the last sentence of your materials first.

4. Which of the statements is true according to the passage?

A. The more important the speech is, the easier it is.

B. Anybody who can talk is not frightened of public speaking.

C. The standard length of a speech is 12 minutes.

D. Public speaking is easy. Have a go, and you will make it.

题型:选择题

小剂景碘主要用于()。

A.呆小病

B.黏液性水肿

C.单纯性甲状腺肿

D.抑制甲状腺索的释放

E.甲状腺功能检查

题型:选择题

国家鼓励和支持以()为重点的农业示范区建设,发挥示范区对农业技术推广的引领作用,促进农业产业化发展和现代农业建设。

A.大宗农产品

B.优势特色农产品生产

C.绿色农产品

D.无污染农产品

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