问题 单项选择题

犬,黏膜苍白,轻度黄染,精神沉郁,食欲减退,偶有低热,轻度消瘦,易疲劳,红细胞数减少。如果对该犬实施输血治疗,下列配血试验结果适宜输血的是()(961-12)

A、主、次两侧红细胞均凝集

B、主、次两侧红细胞均不凝集

C、主侧红细胞凝集、次侧红细胞溶血

D、主侧红细胞凝集、次侧红细胞不凝集

E、主侧红细胞不凝集、次侧红细胞凝集

答案

参考答案:B

阅读理解

阅读理解。

     When we offer our best wishes to others, more often than not, we say: "May you be happy every

day". But it's easier said than done to stay happy all the time. There are always things that stand in its

way.

     The first, perhaps the biggest is genetics. Some scientists say that some people are naturally happier

than others. Besides, major life events as well as social and economic factors can also stand in the way

of happiness, such as losing your job or a family member. Then, there is health affecting your happiness

. So, is it possible that people can find lasting happiness with so many factors preventing them?

     Positive psychologists(心理学家)believe it's possible for people to stay happy for long periods,

although it cannot be lasting. Martin Seligman at University of Pennsylvania argues that daytoday

happiness comes from two things: pleasures and satisfactions. Pleasures are rich experiences that simply

make us feel good things like eating cake or drinking wine. While pleasures can be quite satisfying, the

enjoyment we get from them is shortlived.

     Satisfactions are activities that we like to do and we give all we have to them. They are often

challenging, and we have to draw_on personal skills and strengths to perform them. For some people,

satisfactions come with work. Doctors, for example, often become so concentrated in an operation that

hours pass without them noticing the time. For others, it may be hobbies like gardening, playing tennis or

stamp collecting. These satisfactory activities affect the mood in a way that appears to be lasting.

     Too often, people choose pleasures over satisfactions because they are easier and the effects are

more immediate. Though pleasures may work for a while, there are bad effects. Pleasurable activities

become less enjoyable if overused. Always choosing pleasures over satisfactions can also prevent people

from developing their personal strengths, which, if they're not put to work, will die.

1.How many aspects are mentioned that affect one's staying happy?

A.Two.  

B.Three.

C.Four.  

D.Five.

2.Compared with pleasures, satisfactions ________.

A.have immediate effect and work quickly

B.are more meaningful and last longer

C.are more easily ignored by people

D.depend mostly on one's genetics

3.The underlined phrase "draw on" means ________.

A.learn  

B.find

C.improve  

D.use

4.What is the best title for the passage?

A.How to Be a Happier Person?

B.It's Impossible to Stay Happy Long.

C.Pleasures Are Different From Satisfactions.

D.The Factors That Affect Our Happiness.

单项选择题