在△ABC中，内角A，B，C所对的边分别是a，b，c．已知bsinA=3csin

     Doodles are signs which you draw unconsciously (无意中) when you are holding a pen in your hand and

just happen to start writing aimlessly. However, there is more to these"diagrams (图形) of the unconscious"

than what you see. Free from the restriction (限制, 约束) of the conscious mind, they can be useful in finding

your character and personality, and many of your secret hopes, ambitions, fears, and dreams.

     Faces are a sign of sociability or lack of it. If you doodle happy, smiling faces, you have a friendly,

out-going disposition which people respond to, and you enjoy an active social life. If your faces are bad, this

may mean hating others. Faces looking to the right are sign of outgoing personality and confident expectation

about the future while to the left, a sign of shyness and self-control.

     Bare or narrow trees show a lack of warmth. You've probably been disappointed in life or could even be

suffering from a minor illness that needs attention.

     If you build a house in layer(层), each layer separate, you could be too proud, too eager to make your loved

ones follow your order and jump to attention. A little untidiness in a house makes the people feel comfortable,

safe and happy.

     If your doodle looks like a web, you are making a cry for help in solving a problem. You feel trapped, and

are seeking a way out; perhaps you even want to travel, try out new ideas and realize your ambitions. But you

lack confidence to step out into the World on your own because of the web you've created around you.

1. One can probably have the wish to be _____ if he doodles a building with unconnected stores.

A. a leader

B. a self-controlled person

C. a shy person

D. a lazy person

2. If you doodle a face, you may do any of the following EXCEPT______.

A. lead an active life

B. be out-going

C. dislike others

D. live a rich life

3. What does the underlined word"doodle" mean in Paragraph 2?

A. To draw without realizing what one is drawing

B. To draw carefully and attentively what one likes drawing

C. To write different things without certain limits

D. To write at home, mainly on the wall

4. What is the possible best title of the passage?

A. Don't doodle, or you'll not be able to keep secret

B. Recognize yourself with the help of doodles

C. Doodling, an unpopular habit

D. Doodling may cause untidiness

帧中继作为一种远程接入方式有许多优点，下面的选项中错误的是（）。

A.帧中继比X.25的通信开销少，传输速度更快

B.帧中继与DDN相比，能以更灵活的方式支持突发式通信

C.帧中继比异步传输模式能提供更高的数据速率

D.租用帧中继虚电路比租用DDN专线的费用低

柠檬酸的酸度（PH＝2）比啤酒的酸度（PH＝5）大三倍。

电网风险值为60，请问是（）级风险。

A.Ⅱ

B.Ⅲ

C.Ⅳ

D.Ⅴ

通信企业应采取（）等多种形式，认真受理（），并在（）个工作日内答复用户。