在期货交易中，设立保证金的主要目的是当交易者出现亏损时能及时制止，防止出现不能偿付的

阅读理解。

     A 14-year-old boy from the USA was described as a hero yesterday after he saved the life of a girl in

another country.

     Dean Bluey from Dallas, Texas, was a school boy who was interested in computer. One day, he was

sending an e-mail to a friend on the Internet. Suddenly he received a message saying "Help! Help! Help!"

The message was from Finland, thousands of kilometers way from the USA.

     "I didn't know what I should do," Dean said to a reporter. "It was really difficult to tell if the message

was real." So Dean did nothing at first. But the message kept coming.

     "By then it was easy to see that someone was in trouble," Dean explained. He replied and discovered

that the sender was a 20-year-old student called Tarja, who was alone in a university library. She was very

ill. What was worse, there was no phone around her. Her only way of communicating with the world was

by e-mail.

     Dean got in touch with the Texas police. The police immediately realized that the situation was quite

serious. They found it necessary to call the police in Finland. Then an ambulance＊ rushed to the university,

and soon doctors found Tarja. Luckily, she was still alive and was quickly sent to the hospital.

     "I'm glad she's OK," Dean said. "It's hard to believe, but e-mail saved her life."

1. What was Dean doing when he was asked for help?

A. Meeting a friend.

B. Reading in the library.

C. Sending an e-mail.

D. Playing computer games.

2. What did Dean think of the message after he received it for the first time? 

A. He thought it was real.

B. He thought it was interesting.

C. He believed it.

D. He didn't know if the message was real.

3. How did Tarja communicate with the world without phone?

A. she sent e-mails.

B. she shouted aloud.

C. she wrote letters.

D. she knocked at the door.

4. What does the writer want to tell us in the news?

A. Dean is very kind.

B. The Internet is becoming very helpful.

C. We must help others.

D. There must be some doctors in school libraries.

关于智力的说法，以下表述正确的是（）。

A.文化程度是智力的基础

B.是指人的脑力劳动能力

C.包括观察力、思维能力等

D.智力等同于人的特殊能力

E.可以在短期内通过培训提升

根据便条的要求完成工作 便条高秘书： 你们制定的销售工作会议的经费预算方案已报办公会批准，但在具体实施中还要严格把关，请你在周五的部门会上讲一讲会议经费的使用方法，先准备一份发言稿交给我。 谢谢。 行政经理：张磊 2007年1月10日

以下哪种情况在PET诊断肺癌中的假阴性率高（）

A.结节小于7mm

B.结节小于8mm

C.结节小于9mm

D.结节小于10mm

E.结节小于11mm

管理的艺术性集中体现在（）

A.管理活动中对于"度"的把握

B.管理活动是一种创造性的活动

C.管理活动有其特殊规律性

D.A+B

E.以上都不是