引起血尿的常见原因为哪些?

患者，男，16岁，1个月前右肘前方刀刺伤，经清创缝合，创口愈合，但右手逐渐呈猿手畸形，不能握笔写字。

查体时可发现（）。

A.尺侧一指半皮肤感觉消失

B.拇指对掌功能障碍

C.手指夹纸试验阳性

D.掌指关节指间关节被动屈曲障碍

E.1～5指主动屈曲障碍

荧光抗体染色技术中，特异性最高，非特异性染色最低的方法是 （）

A.直接法

B.间接法

C.补体结合法

D.双标记法

E.多标记法

船上钻床钻削工件时，注意事项是（）。

Ⅰ、工作时严禁戴手套；

Ⅱ、工件应装夹牢靠；

Ⅲ、不能用手或棉纱清洁切屑。

A．Ⅰ+Ⅱ

B．Ⅰ+Ⅲ

C．Ⅱ+Ⅲ

D．Ⅰ+Ⅱ+Ⅲ

阅读理解

     __1__  Many things can become distractions (分散注意力). Your ability to focus your mind,

emotions and physical movements will directly influence your success. Staying focused on the task

at hand can be easier said than done. Here are some powerful techniques that can help you improve

your ability to focus.

     For physical control, it helps to have a constant exercise schedule. __2__ Exercising helps you

gain better command of your body, and even goes beyond the body, giving you more flexibility not

just physically but also emotionally and mentally.  When you feel more comfortable in your body,

you increase your selfconfidence, which helps you feel more relaxed.

     For mental control, meditation (沉思；冥想) does the task. __3__  It's easy to get distracted

by things in your background, but in order to perform well you have to maintain a high degree of focus.

When you relax your thoughts it trains your mind to deal effectively with outside distractions so you

can stay centered on what matters most at the moment.

     __4__ It prevents you from overreaction and also from overacting. When your emotions settle

down, you gain greater awareness of the environment you're in, and feel calm and in control.

    __5__ The good thing is that selfcontrol can be developed.  Start exercising frequently, get yourself

into meditation, and start to feel positive changes in your career and your life in general.

A. In short, focus requires selfcontrol.

B. There are many benefits of exercising.

C. Generally speaking, you need to practise a lot.

D. There are still some disadvantages of exercises.

E. Your emotions are well served by meditation as well.

F. Focus is an important part of success and achievement in general.

G. It helps block out all the noise and activities that are going on around you.

一个步行周期中包含

A．一个单支撑期
B．一个双支撑期
C．一个单支撑期和一个双支撑期
D．一个单支撑期和两个双支撑期
E．两个单支撑期和一个双支撑期