原发性痛经的主要机制是( )。 A.雌激素升高 B.孕激素升高 C.雄激素升高

题型:单项选择题

问题:

原发性痛经的主要机制是( )。

A.雌激素升高
B.孕激素升高
C.雄激素升高
D.前列腺素升高
E.促性腺激素升高

考点:西药执业药师药学综合知识与技能西药执业药师药学综合知识与技能
题型:单项选择题

把48个球装在盒子里,每个盒子装的同样多,有几种装法?需要几个盒子?如果37个球呢?

题型:单项选择题

在人类进化的过程中.人与古猿的最本质的区别是 (    )

A.产生语言和意识

B.制造和使用工具

C.直立行走

D.学会劳动

题型:单项选择题

应收款系统必须具有销售发票的新增、修改、删除、查询、打印、审核和记账等功能。()

题型:单项选择题

不要怕去学新的东西。知识没有(),是可以随身携带的宝藏,没有人会被它压垮,而且愈多你愈身心矫健。

A.重量

B.大小

C.困难

D.期限

题型:单项选择题

阅读理解。

     Do this and you'll be welcome anywhere.

     Why read this book to find out how to win friends? Why not study the technique of the greatest winner

of friends the world has ever known? Who is he? You may meet him coming down the street. When you get

within ten feet of him, he will begin to wag its tail. If you stop and pat him, he'll jump out of his skin to show

you how much he likes you. And you know this show of love. There is no secret motives (动机): he doesn't

want to sell you any real estate(房产),and he doesn't want to be your husband or wife.

      Did you ever stop to think that a dog is the only animal that doesn't have to work for a living? A hen has

to lay eggs; a cow has to give milk; and a canary has to sing. But a dog makes a living by giving you nothing

but love.

     When I was five years old, my father bought a little yellow-haired young dog for fifty cents. He was the

light and joy of my childhood. Every afternoon around four thirty, he would sit in the front yard with his

beautiful eyes staring at the road, and as soon as he heard my voice or saw me through the bush, he was off

like a shot, racing breathlessly up the hill to greet me with leaps of joy and barks of cheer.

      Tippy was my good companion (同伴) for five years. Then one night-I shall never forget it -he was killed

within ten feet of my head, killed by lightning. Tippy's death was the terrible event of my childhood. You never

read a book on psychology (心理学), Tippy. You didn't need to.

     You know that one can make more friends in months by really interested in other people than one can in

two years by trying to get other people interested in him. Let me repeat that. You can make more friends in

two months by becoming interested in other people than you can in two years by trying to get other people

interested in you.

1. When the writer writes"the greatest winner of friends the world has ever known", he refers to _____.

A. himself

B. Tippy

C. a pet dog

D. a psychology book

2. The writer takes Tippy as a good example to ______. 

A. explain how to win love from others

B. show how he liked his friend

C. tell the readers why they should read the book

D. show us how a pet dog should behave

3. According to the writer, to be welcome anywhere, you must ______.

A. know much about others' feelings

B. do everything without secret motives

C. satisfy the needs of different people

D. show care and love for others

4. Generally speaking, in what manner is the passage written?

A. Light

B. Serious

C. Sad

D. Disappointed

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