问题 单项选择题 A1/A2型题

有关胰岛素的药理作用的说法,不正确的是()

A.促进糖原、脂肪、蛋白质的合成

B.增加葡萄糖的氧化和酵解

C.减少糖原异生和分解

D.促进Na+进入细胞

E.增加葡萄糖的摄取

答案

参考答案:D

解析:胰岛素对代谢过程具有广泛的影响:①糖代谢,可增加葡萄糖的转运,加速葡萄糖的氧化和酵解,促进糖原的合成和贮存,抑制糖原分解和异生而降低血糖;②脂肪代谢,胰岛素能增加脂肪酸的转运,促进脂肪合成并抑制其分解,减少游离脂肪酸和酮体的生成;③蛋白质代谢,胰岛素可增加氨基酸的转运和蛋白质的合成,同时又抑制蛋白质的分解;促进K+进入细胞,而非Na+,所以答案为D。

单项选择题
阅读理解

阅读理解。

     Dou Kou, a Chinese boy, is called "the youngest writer in the world". He has written three books till now.

Dou Kou was born in Jiangsu in 1994. When he was 7 months old, his parents started working in over 30

different cities, such as Xi'an and Shenzhen. This kind of life gave him things to think and write about. When

he was 9 months old, he could speak and at the age of one, he could say five to six hundred words. At three,

he could look up words in the dictionary. At four, his father taught him how to learn by himself. His parents

like reading very much. So does he. At the age of 5, he began writing fairy tales. At the age of 6, he wrote a

novel about his life in different cities with his parents. His fairy tales are all from his life. One day, he found

many mice in the house. They not only ate their food but also hurt his mother's hand. So he thought, "If we give

mice the stomach of cows, they will eat grass and they will be helpful to people." This was his first fairy tales

Change Stomach for Mice. Now he studies well in a middle school. He has written his third book, the novel

called Eyes of Children. He says, " I am not different from other children. I just wrote several books. "

1. How many books has Dou Kou written?

A. Three.

B. Four.

C. Five

D. Six

2. Thanks to his _____, Dou Kou could write his books.

A. mother

B. father

C. school life

D. life in different cities

3. Dou Kou began to use a dictionary _____.

A. when he wrote fairy tales

B. before his father taught him how to learn something

C. after he went to school

D. after his mother taught him how to learn something

4. The underlined (画线的) sentences show us that Dou Kou _____.

A. is different from other children

B. doesn't tell the truth

C. is the same as other children

D. likes his books

5. Which is the best title?

A. Three Books by a child

B. How to Write a Fairy Tales

C. How Clever the Boy is

D. Dou Kou, the Youngest Writer