应激的中介机制主要通过以下途径：（）；（）；（）。

原核细胞与真核细胞最明显的区别在于：[ ]

A．有无核物质

B．有无细胞质

C．有无核膜

D．有无核酸

阅读理解。

     People make good use of time in America. Americans think much about time, and from childhood they

learn to value time.As children, they are taught to be on time to go to school,to walk and to do everything. When they are having a good time, they say that time goes easily.  When a person is dying, they say he is

living on a borrowed time.

     Time is money. Time is knowledge. Time is everything in America. A working American has to work

hard for eight hours a day or forty hours a week,and this is the working time.In his free time,he also works hard for more money. Even on Saturday and Sunday he also works as usual. In the street you can hardly

see a man walking slowly. They walk very fast. In fact, they are running.

     They love time because time can bring them money and lots of things. But sometimes they also hate

time, because they feel they have become servants of the clock.

1. What do the Americans mean by "Time is money"?

A.If someone has time and works hard, he can make a lot of money.

B.It takes quite a lot of time to make money.

C.Working 'hard can bring people's health.

2. Americans think that it is wrong______ .

A.to work late

B.to get up early

C.to be on time to do everything

3. The passage says that a dying person______.

A.is having a good time

B.thinks time goes easily

C.is living on a borrowed time

4. From this passage we can be sure that______.

A.Americans live in a quick rhythm

B.Americans live a hard life

C.Americans always walk fast

5. Which of the following is the best title for this passage?

A.Time is money.

B.American's idea about time.

C.Never waste any time.

产地加工需去外皮晒干的药材是（）。

A.远志

B.茜草

C.葛根

D.党参

E.天花粉

有关腹痛程度的描述错误的是

A．化学性刺激产生疼痛较重

B．肾结石引起的疼痛剧烈

C．炎症性刺激引起的疼痛较轻

D．腹痛减轻即表示病人好转

E．通常腹痛加重提示病情加重

男，23岁，某农药厂包装工，因事故农药喷洒一身，2h后出现头痛、头晕、嗜睡、恶心、发绀，继之出现昏迷及少尿、血尿。查体：双侧瞳孔3mm，两肺可闻及少许干、湿啰音，心率110次/分，心脏听诊可闻及早搏。尿常规：RBC（+++），WBC（++），蛋白（++），镜下可见颗粒管型。

应考虑诊断为（）

A.急性有机磷类杀虫药中毒

B.急性氨基甲酸酯类杀虫药中毒

C.拟除虫菊酯类杀虫药中毒

D.杀虫脒中毒

E.百草枯中毒