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问题 单项选择题

在人身保险合同中，投保人、被保险人或受益人故意制造保险事故且投保人已交纳2年以上保险费的()。

A.保险人无权解除保险合同

B.保险人有权解除保险合同，但应在扣除手续费后退还保险费

C.保险人有权解除保险合同，并向受益人退还全额保险费

D.保险人有权解除合同，但应退还保险单的现金价值

答案

参考答案：D

多项选择题

下列有关房室模型的叙述，正确的是()

A.药代动力学房室模型是按药物分布速度以数学方法划分的概念

B.多数药物按单房室模型转运

C.房室模型为药物固有的药代动力学指标

D.用同一药物试验，在某些人呈二室模型，而在某些人可呈单室模型

E.同一药物口服时呈二室模型而静脉注射则可呈单一房室模型
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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.

The writer of the passage has a （） attitude towards dangerous sports.

A. positive

B. negative

C. neutral

D. critical
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