按照获得的途径，动物行为可分为先天性行为和学习行为。下列属于学习行为的是（） A.小

地西泮不具有的不良反应是：

A．共济失调

B．白细胞减少

C．中枢麻醉

D．呼吸抑制

E．嗜睡、乏力

阅读理解。

     It is quite reasonable to blame traffic jams,the cost of gas and the great speed of modern life,

but manners on the road are becoming horrible. Everybody knows that the nicest men would

become fierce tigers behind the wheel. It is all right to have a tiger in a cage,but to have one in the

driver's seat is another matter.

     Road politeness is not only good manners,but good sense. It takes the most cool－headed

drivers great patience to give up the desire to beat back when forced to face rude driving. On the

other hand,a little politeness goes a long way towards reducing the possibility of quarrelling and

fighting. A friendly nod or a wave of thanks in answer to an act of politeness helps to create an

atmosphere of good will and becomes so necessary in modern traffic conditions. But such behaviors

of politeness are by no means enough. Many drivers nowadays don't even seem able to recognize

politeness when they see it.

     However,misplaced politeness can also be dangerous. Typical examples are the driver who

waves a child crossing the street at a wrong place into the path of oncoming cars that may not be

able to stop in time. The same goes for encouraging old ladies to cross the road wherever and

whenever they want to.

     An experienced driver,whose manners are faultless,told me it would help if drivers learnt to

correctly join in traffic stream without causing total blockages that give rise to unpleasant feelings.

Unfortunately,modern drivers can't even learn to drive,let alone master the road man ship. ears

ago,experts warned us that the fast increase of the car ownership would demand more give-and-take

from all road users. It is high time for all of us to take this message to heart.

1. The passage mainly talks about________.

A. traffic jams

B. road politeness

C. good manners  

D. modern drivers

2. Troubles on the road are often caused by________.

A. the behavior of the drivers

B. traffic jams

C. great speed  

D. terrible road conditions

3. According to the writer,a good driver should________.

A.be able to recognize politeness when he sees it

B. beat back when forced to face rude driving

C. encourage old ladies to cross the roads whenever they want to

D. join in traffic stream quickly however other people feel

4. The following statements are right EXCEPT that________.

A. some modern drivers are not good at driving

B. road politeness is good sense as well as good manners

C. a friendly driver should nod or wave thanks in answer to an act of politeness

D.it is also right to have a tiger in the driver's seat

5. It is not always right for drivers to________.

A. master road man ship

B. recognize politeness when they see it

C. give a friendly nod in answer to an act of politeness

D. encourage old ladies to cross the road whenever and wherever they want

补偿中最重要的是( )，因为它是整个生态环境功能所依赖的基础。

A．植被补偿

B．经济补偿

C．耕地补偿

D．森林补偿

球磨机的主要作用力形式是研磨。

没药的原植物科名是（）

A.棕榈科

B.橄榄科

C.豆科

D.漆树科

E.伞形科