尿毒症心血管系统表现中不常见A．高血压B．心内膜炎C．心力衰竭D．心律紊乱E．心包炎

纳税人实际占用的土地面积的组织测量工作，由（）根据实际情况确定。

A.主管税务机关

B.纳税人

C.土地管理部门

D.省、自治区、直辖市人民政府

人工合成色素液体药剂中一般用量为

A．1/百万-2/百万

B．2/百万-5/百万

C．5/百万-10/百万

D．5/百万-8百万

E．8/百万-10/百万

女性，52岁。发现左 * * 包块3个月。检查发现左乳外上象限约3．0cm×2.5cm大小肿块，表面不光滑，质硬，边界不清楚，动度小，无明显触痛。同侧腋窝触及肿大、质硬的淋巴结。

如确诊为乳腺癌，较理想的治疗方案为（）。

A.乳癌根治术

B.乳癌根治术加放射治疗

C.乳癌根治术加中医治疗

D.乳癌根治术加免疫治疗

E.乳癌根治术加内分泌治疗

牙列缺失后，颌骨的改变规律是

A．上颌骨内侧吸收比外侧多而快

B．上颌骨外侧比内侧吸收多而快

C．下颌骨外侧吸收比内侧多而快

D．上颌骨内外侧均匀吸收

E．下颌骨内外侧均匀吸收

阅读理解。

     Sorry to say, our brains naturally start slowing down at the Cruelty young age of 30. It used to be

thought that this couldn't be helped, but new studies show that people of any age can train their brains

to work faster. "Your brain is a learning machine," says University of California scientist Dr. Michael

Merzenich. Given the right tools, we can train our brains to act like they did when we were younger.

All that's required is the practice designed just for the purpose: a few exercises for the mind.

     Merzenich has developed a computer-based training method to speed up the process(过程) in which

the brain deals with information (positscience.com). Since much of the data we receive comes through

     Over the course of training, the program starts asking you to distinguish (辨别) sounds (between "dog"

and "bog", for example) at an increasingly faster speed. It's a bit like tennis instructor, says Merzenich,

hitting balls at you ~faster and faster to keep you challenged (受到挑战). You may start out slow, but before

long you're pretty quick.

     The biggest finding in brain research in the last ten years is that the brain at any age is highly plastic. If

you ask your brain to learn, it will learn. And it may even speed up while in the process.

     To keep your brain young and plastic you can do one of a million new activities that challenge and excite

you: playing table tennis or bridge, doing crossword puzzles, learning a language.... "When it comes to

preventing ageing, you really do 'use it or lose it'," says Barbara Sahakian, professor at Cambridge University.

1. Dr. Merzenich's training method mainly depends on ______.

A. speech training

B. computer languages

C. the activities one joins in

D. the information being dealt with

2. By saying "the brain at any age is highly plastic", the writer probably means the brain can be_____.

A. used

B. mastered

C. developed

D. researched

3. What can we learn from the text?

A. Practice makes a quick mind.

B. Brain research started ten yeas ago.

C. Dr. Merzenich is a scientist in computer.

D. People believed nothing could stop the brain slowing down.

4. Which of the following agrees with the writer's idea?

A. The training methods work better for the old.

B. People should use the brain to stop it from ageing.

C. The training of the brain should start at an early age.

D. It's necessary to take part in as many activities as possible.