问题 单项选择题

用镇痛新的过程中,大量吸烟而使镇痛新的药效降低的原因是()。

A.首过效应

B.酶促作用

C.相加作用

D.升高血糖

E.生成难溶性化合物

答案

参考答案:B

解析:

[知识点] 药物与食物、烟、酒、茶的相互作用

多项选择题
单项选择题

(A)

Around the world more people are taking part in dangerous sports and activities. Now, there are people who look for an immediate excitement from a risky activity which may only last a few minutes or even seconds.

I would consider bungee jumping (蹦极) to be a good example of such an activity. You jump from a high place 200 meters above the ground with an elastic (弹性的) rope tied to your feet. You fall at up to 150 kilometers an hour until the rope stops you from hitting the ground. It is said that about 2 million people around the world have now tried bungee jumping. Other activities which most people would say are as risky as bungee jumping include jumping from tall buildings and diving into the sea from the top of high cliffs.

Why do people take part in such activities as these Some psychologists suggest that it is because life in modem societies has become safe and boring. Not very 10ng ago, people’s lives were constantly in danger. They had to go out and hunt for food, diseases could not easily be cured, and life was a continuous battle for survival.

Nowadays, according to many people, life offers little excitement. They live and work in quite safe conditions: they buy food in shops, and there are doctors and hospitals to look after them if they become ill. The answer for some of these people is to look for danger in activities such as bungee jumping.

Which of the following is true according to the passage()。

A. About 200,000 people in the world have tried bungee jumping.

B. In order to keep one safe, a rope is tied to feet of the jumping.

C. Diving into the sea from the top of the cliffs is much more dangerous than bungee jumping.

D. Many people nowadays feel life dull because they haven’t tried bungee jumping.