孙中山的民主民权思想更多地来自西方社会现实和政治文化的直接影响。

阅读理解。

     Have you ever heard the story of the four-minute miles? Many years ago, people believed that it was

impossible for a human being to run a mile in less than four minutes until Roger Banister proved it wrong in

1954.

     What happens if you put an animal in a pond? Any animal, big or small, will swim its way through. What

happens when someone, who doesn't know how to swim, falls in deep waters? They drown. If an animal who

has not learnt swimming could escape by swimming, why not you? Because you believe you will drown while

the animal doesn't.

     Have you ever wondered why the letters are organized in a particular order on your keyboard? You might

have thought it is to increase the typing speed. Most people never question it. But the fact is that this system

was developed to reduce the typing speed at a time when typewriter parts would jam if the operator typed too

fast.

     These three cases show the power of our beliefs. There is no other more powerful directing force in human

behavior than belief. Your beliefs have the power to create and to destroy. A belief delivers command to your

nervous system.

     I used a snake in my workshops for children to show them how unrealistic some of their beliefs are.

Students of a school in India, said snakes are slippery and slimy and poisonous. After doing an exercise for

changing beliefs, they handled my snake and found it to be dry and clean. They also remembered that only

three types of poisonous snakes exist in India.

     Did this story end the way you thought? Review your beliefs now and find out which ones you need to

change?

1. In the author's opinion, if a person in deep water doesn't know how to swim, he will drown because _____. [ ]

A. he is afraid of water

B.he believes he will drown

C. he hasn't learnt to swim before

D. he doesn't want to live in the world

2. The author thinks that the letters organized in a particular order on your keyboard in order to _____. [ ]

A. save more space

B. satisfy the operator

C. reduce one's typing speed

D increase one's typing speed

3. The main idea of this passage should be that _____. [ ]

A. Beliefs are very powerful

B. Beliefs make us seem stupid

C. Changing your beliefs now is necessary

D. People should always believe in themselves

激光二极管的工作寿命一般以（）来定义。

A、阀值电流的增大

B、阀值电流的减小

C、输出功率的增大

D、输出功率的减小

强制戒毒工作由( )主管。

A．卫生部门

B．民政部门

C．公安机关

D．强制戒毒所

梁式桥中应用最早，使用最广泛的桥形之一是( )。

A．简支梁式桥
B．悬臂梁式桥
C．连续梁式桥
D．单臂梁式桥

造父变星