大学的学术自由传统可追溯到（）。A.牛津大学 B.中世纪大学 C.哈佛大学 D.剑桥

哪一项血气参数最能反映肺通气状况()

A．BE

B．SaO

C．PaO

D．PaCO

E．pH

阅读理解

     I told my friend Graham that I often cycle two miles from my house to the town centre but

unfortunately there is a big hill on the route. He replied, "You mean fortunately." He explained

that I should be glad of the extra exercise that the hill provided.

     My attitude to the hill has now changed. I used to grumble as I approached it but now I tell

myself the following. This hill will exercise my heart and lungs. It will help me to lose weight and

get fit. It will mean that I live longer. This hill is my friend. Finally I comfort myself with the thought

of all those silly people who pay money to go to a gym and sit on stationery exercise bicycles when

I can get the same value for free. I have a smile of satisfaction as I reach the top of the hill.

     Problems are there to be faced and overcome. We cannot achieve anything with an easy life.

Helen Keller was the first deaf and blind person to gain a university degree. Her activism and

writing proved inspirational. She wrote, "Character cannot be developed in ease and quiet.  Only

through experiences of trial and suffering can the soul be strengthened, vision cleared, ambition

inspired and success achieved."

     One of the main determinants of success in life is our attitude towards adversity (逆境). From

time to time we all face hardships, problems, accidents,  afflictions and difficulties. Some are of

our making but many confront us through no fault of our own.  While we cannot choose the

adversity we can choose our attitude towards it.

     Douglas Bader was 21 when in 1931 he had both legs cut off following a flying accident. He

was determined to fly again and went on to become one of the leading flying aces in the Battle of

Britain with 22 aerial victories over the Germans. He was an inspiration to others during the war.

He said, "Don't listen to anyone who tells you that you can't do this or that. That's nonsense.

Make up your mind, you'll never use crutches (拐杖) or a stick, then have a go at everything. Go

to school, join in all the games you can. Go anywhere you want to. But never, never let them

persuade you that things are too difficult or impossible."

     The biographies(传记)of great people are full of examples of how they took steps to overcome

the difficulties they faced. The common thread is that they did not become depressed. They chose

their attitude. They chose to be positive. They took on the challenge. They won.

     Nevertheless, there is still the problem of how you change your attitude towards adversity.

1. Which of the following is TRUE according to the author of the  passage?

A. Climbing hills on bicycles is the best way to take exercise.

B. People are silly to pay to go to the gym.

C. Those who want to achieve success can't expect to live         an easy life.

D. People's attitude towards adversity is the only factor that determines whether they will succeed.

2. By quoting what Douglas Bader said, the author intends to  tell us "________".

A. Failure is the mother of success.

B. A fall into the pit, a gain in your wit.

C. If you venture nothing, you will have nothing.

D. Nothing is difficult to the man who will try.

3. Following this passage, the author will further talk about ________.

A. how his friend helped him to change his attitude towards  the adversity he faced

B. what steps to take to change your attitude towards the  adversity you face

C. what great people have in common

D. why it is important to keep optimistic in face of adversity

4. Which of the following can best function as the title of the  passage?

A. Face Adversity with a Smile

B. Different Attitudes towards Adversity

C. Nothing is Impossible

D. Life Is Full of Adversity

选用高温管材的主要依据是（）。

开启地下有限空间出入口前，应使用气体检测设备检测地下有限空间内是否存在（）、蒸气，存在爆炸危险的，开启时应采取相应的防爆措施。

A.沼气

B.二氧化碳

C.可燃性气体

阿司匹林水解产物是

A．苯乙酸和乙酸

B．对甲苯甲酸和乙酸

C．邻甲基苯甲酸和乙酸

D．邻羟基苯甲酸和甲酸

E．水杨酸和乙酸