下列出血性疾病中，属于凝血功能异常的是（） A.过敏性紫癜 B.维生素C缺乏症

阅读理解。

     The summer vacation is over(结束). It's true that time flies fast. During the vacation, the weather

was hot and I could not do much work, but I lived happily.

     As the afternoon was hot, I did my work in the morning, I used to (习惯于)get up at 6:30 and

take a walk in the garden for half an hour. After that, I began to read English and Chinese and did

some math exercises. Those took me three hours or more. I worked very hard and made good

progress(进步).

     I spent the afternoon outside. I went swimming and it was funny. I would not go home until it

was five or six o'clock. Sometimes a friend would come to see me and we would spend some

hours listening to music.

     In this way I spent my vacation happily. And I not only studied well but also became a good

swimmer. Now I am in good health and high spirits(精神).

1. What did the writer(作者)think of his vacation?

A. It was sad.

B. It was boring.

C. It was great.

D. It was not fun.

2. The weather was very ___________ during the vacation.

A. cool

B. hot

C. warm

D. cold

3. How long did it take the writer to have a walk?

A. Three hours

B. Half an hour

C. Only one hour

D. One and a half hours

4. The writer spent most of the afternoon ____________.

A. visiting his friend

B. doing homework

C. swimming

D. listening to music

5. Which of the following is wrong?

A. The writer was not healthy.

B. He was good at swimming.

C. He studied very well.

D. He spent his vacation happily.

投射测验的特点是（）。

A．测验材料的结构完整

B．被试的反应可以事先确定，反应的内容是有限的

C．刺激材料的意义不明确

D．结果解释是客观的，不受经验的影响

劳动力供给缺乏弹性表示为( )。

A．E_S＜0

B．E_S＞2

C．E_S＜1

D．E_S＞1

MRI成像原理（）

A．基于射线的穿透性、荧光效应和感光效应，以及人体组织之间有密度和厚度的差别进行成像

B．用X线束对人体检查部位一定厚度的层面进行扫描，由探测器接收透过该层面的X线，转变为可见光后，由光电转换器转变为电信号，再经模拟-数字转换器转为数字，输入计算机进行断层重建处理，获得图像

C．通过对主磁体内静磁场(即外磁场)中的人体施加某种特定频率的射频脉冲，使人体组织的氢核(即质子)受到激励而发生磁共振现象；当终止射频脉冲后，质子在弛豫过程中感应出MR信号；经过对该信号的接收、空间编码和图像重建等处理过程，产生图像

D．人体软组织的声阻抗差异很小，但只要有1/1000的声阻抗差，就会产生反射回波，故利用这一特性来显示不同组织界面、轮廓，分辨其密度

E．利用引入体内的放射性核素发射的射线，通过体外的探测仪器检测射线的分布与量，达到成像的目的

临床因食积导致的泄泻，宜采用的治法是（）

A.通因通用

B.塞因塞用

C.缓则治其本

D.补泻并用

E.先祛邪，后扶正