肝硬化时反映纤维化的试验是A.血清乳酸脱氢酶升高 B.血清单胺氧化酶升高 C.血浆白

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问题:

肝硬化时反映纤维化的试验是

A.血清乳酸脱氢酶升高

B.血清单胺氧化酶升高

C.血浆白蛋白降低

D.谷草转氨酶升高

考点:普通考研西医综合西医综合
题型:单项选择题

一艘在太空直线飞行的宇宙飞船,开动推进器后,受到的推力大小是900N,开动3s的时间内速度的变化量大小为0.9m/s,飞船的加速度大小为______,飞船的质量为______.

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C

Perhaps you have a big test coming up and you are feeling nervous. You know you have got to do well. The pressure is on, so you may be losing sleep and the ability to concentrate. How can you deal with the stress, study effectively, and take the test with confidence? Maybe you should try meditation(沉思).

When people think about meditation, many pictures of old men’s sitting cross-legged on remote mountaintops will appear in mind. People describing meditation frequently mention elements such as relaxation and “thinking about nothing”.

It is not necessary to travel to a mountaintop to enjoy the benefits of meditation because it is actually more about awareness than just relaxation. The secret of meditation is breathing.

To star meditating, find a place where you can sit or stand comfortably for a little while and concentrate. Close your eyes and start taking slow breaths. Focus on the air moving in and out of your body. If your mind starts to wander and you begin to think about something else, refocus your attention on your breathing.

Meditation has little to do with escaping problems or thinking about nothing. Instead, the breathing techniques help you calm down and think more clearly about your feelings. The issues on your mind unfold clearly, as if they were in slow motion.

This clarity(清晰)is called “mindfulness”. Being mindful means that you are aware of what you are thinking without becoming caught up in your thoughts. It takes practice, but with time, that big test will not scare you anymore. You will realize through meditation that fear is just a product of not being mindful.

64. What is the best way to reduce the pressure if one faces a big test?

A. To climb up to the top of a mountain for a rest.

B. To sit on the top of a mountain without thinking anything.

C. To sit or stand comfortable and begin to meditate.

D. To sit quietly with one’s legs crossed.

65. What should a person do if his mind begins to wander while meditating?

A. Stop meditating.

B. Concentrate on breathing again.

C. Involve himself in his thoughts.

D. Close eyes immediately.

66. From the passage we can learn that by practicing meditation we’ll__________.

A. not be stuck in our thoughts

B. pass the examinations easily

C. realize fear is a product of too much thought

D. never be afraid of big tests

67. From the passage we can know the writer’s purpose is to let the readers know__________

A. how to deal with the stress before a big test

B. what is meditation

C. how a big test scares the students

D. where is the best place to relax

题型:单项选择题

鱼类性别通常可分为:雌雄异体,正常的雌雄同体和在同一种内一部分是雌雄异体,一部分是雌雄同体或性逆转现象的个体等三种类型。

题型:单项选择题

()信号机在正常情况下的显示距离,不得小于800m。

A.进站

B.高柱出站

C.高柱进路

D.接近

题型:单项选择题

患者,男性,25岁,因车祸撞伤腹部,患者诉腹痛难忍,伴恶心、呕吐,X线腹透,见膈下游离气体,拟诊为胃肠道外伤性穿孔。

下列对诊断胃肠道穿孔最有意义的表现是

A.腹膜刺激征
B.肠鸣音消失
C.腹腔穿刺抽出混浊液体
D.白细胞计数增高
E.感染中毒症状

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