中国资本主义萌芽发展缓慢的原因。

如果a×3=b×5，那么a：b=______：______，b比a少______%．

封闭型投资基金的基金份额不得转让。

用于诊断范可尼贫血的检查是（）

A.干祖细胞培养

B.常规染色体核型分析

C.染色体断裂试验

D.造血细胞端粒长度检测

E.造血细胞凋亡检测

It is now commonly known that AIDS is a deadly disease. It does great damage to human beings’ immune system, weakening resistance to disease and leading to death due to utter weakness. To this day, there are no existing drugs that can kill AIDS virus. It is a deadly battle between science and AIDS.

This is only one side of the story. Although it can not be cured, AIDS is preventable. For those who have not caught the disease, the knowledge of preventive measures seems to be the most powerful weapon at hand.

Since the discovery of the first AIDS patient in 1985, the number of HIV carriers is on an alarming rise in China and statistics show that young people are the more likely victims of AIDS. Nationwide there are 214 million people between the ages of 13 and 22, most of whom are students. If no measures are taken to protect these young people, it is almost certain that the threat of AIDS will be very real to them. There has been a great deal of misinformation concerning the transmission of AIDS.

One of the most misleading myths is that AIDS can be transmitted by casual physical contact such as kissing, shaking hands or sharing food container. Surveys and investigations conducted in some universities and colleges show that half of those people questioned are not clear about how AIDS is transmitted, not to mention how it is prevented.

This is the driving force behind the State Education Department’s decision to spread AIDS awareness information among college students and later to high school students and primary school students.

69．Why does the passage say that AIDS is a deadly disease?

A．Because it destroys the immune system of the human body.

B．Because the AIDS patients cannot resist the disease and will die.

C．Because the doctors now find no medicine to cure AIDS.

D．All of the above.

70．By writing “This is only one side of the story”, the author suggests that_____.

A．although we can’t cure AIDS, we can manage to prevent it.

B．AIDS is very dangerous, but we should not be scared of it.

C．AIDS is not curable, but doctors should not give up fighting against it.

D．although the doctors cannot cure the disease, they can help improve the patients’ health.

71．What can be concluded from the surveys and investigations mentioned in the passage?

A．No college students know how people become AIDS victims.

B．50 percent of college students do not know how to prevent AIDS.

C．Many college students are not aware how people become AIDS victims.

D．Many college students did not mention AIDS prevention in the surveys and investigations.

72．What is the best title of this passage?

A．China Fights AIDS             B．Young People—Most likely AIDS Victims

C．AIDS Information Is Necessary   D．AIDS—A Deadly Disease

何为"产后三病"？（）

A.呕吐、泄泻、肿胀

B.头痛、眩晕、尿闭

C.息胞、下血、昏迷

D.痉病、郁冒、大便难

E.心悸、腹痛、盗汗