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问题 单项选择题

大多数药物吸收的机制是（ ）

A．逆浓度差进行的消耗能量过程

B．消耗能量，不需要载体的高浓度向低浓度侧的移动过程

C．需要载体，不消耗能量的高浓度向低浓度侧的移动过程

D．不消耗能量，不需要载体的高浓度向低浓度侧的移动过程

E．有竞争转运现象的被动扩散过程

答案

参考答案：D

单项选择题

房颤发生的心外原因首先考虑（）

A.甲状腺机能亢进症

B.多发性硬化症

C.肺栓塞

D.电解质紊乱

E.脑中风
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单项选择题

At some time in your life you may have a p desire to do something strange or terrible. However, chances are that you don’t act on your impulse, but let it pass instead. You know that to commit the action is wrong in some way and that other people will not accept your behavior.
Perhaps the most interesting thing about the phenomenon of the behavior is how it can change over the years within the same society, how certain behavior and attitudes once considered taboo can become perfectly acceptable and natural at another point in time. Topics such as death, for example, were once considered so upsetting and unpleasant that it was a taboo to even tall about them. Now with the publication of important books such as "On Death and Dying" and "Learning to Say Goodbye", people have become more aware of the importance of expressing feelings about death and, as a result, are more willing to talk about this taboo subject.
One of the newest taboos in American society is the topic of fat. Unlike many other taboos, fat is a topic that Americans tall about constantly. It’s not taboo to tall about fat; it’s taboo to be fat. The "thin" look is thin, not fat.
In the work world, most companies prefer youthful-looking, trim executives to sell their image as well as their products to the public. The thin look is associated with youth, vigor and success. The fat person, on the other hand, is thought of as lazy and lacking in energy, self- respect. After all, people think, how can people who care about themselves, and therefore the way they look, permit themselves to become fat In an image-conscious society like the U.S., thin is "in", fat is "out".

In the last sentence of the passage, the phrase "image-conscious society" can be replaced by ______.

A. very imaginative society with nice appearance
B. fast-developing society which is built on a clear image
C. the society whose image has been mined because of money
D. the society in which image has been attached importance to
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