问答题简答题：简述蛋白质的互补作用。

题型：单项选择题

刘先生今年30岁，在一家大公司工作，刘太太是国内某高校的教师。刘先生2003年买了一辆价值30万元的奥迪A4，当时奥迪A4的市价为32万元。刘先生对该车向某财产保险公司投了保。刘先生是住房公积金制度的客户，每月按时缴纳住房公积金。他打算购买一套评估价为60万元的自住普通住房，拟在招商银行申请个人住房公积金贷款，假定目前刘先生名下的住房公积金本息余额为5000元，上个月公积金汇储额为100元(包括单位及个人)。本人目前离法定退休年龄还剩30年。
刘先生一家的每月平均支出为：家用固定电话费100元，刘先生手机费500元，刘太太手机费130元，上网费360元，水电费300元，购买日常生活用品开支约300元，交通开支约2500元，此外，每月寄给刘先生父母1000元，刘太太父母1000元。另外，还有休闲娱乐等开支1500元。

若刘先生刚为汽车购买保险时，由于还未上牌照，保单尚未生效，他怕会发生损失，则可以通过( )来规避保单生效前的风险。

A．投保单

B．暂保单

C．保险凭证

D．保险单

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题型：阅读理解

阅读理解。

Computers can injure (伤害) you. Most other injuries happen suddenly. For example, if you fall off a bike

and break your arms, it happens very quickly. But computer injuries happen slowly.

You probably know how to ride a bike safely. Now learn to use a computer safely.

Your eyes

Too much light can injure your eyes, so never sit too close to a computer screen. Your eyes should be at

least 50 centimeters (厘米) from the screen. Remember to look away from it sometimes. This gives your eyes

a rest.

When you use a computer, the window should be on your left or your right. If it is behind you, the light

will reflect on (反射) the screen. If the window is in front of you, the sun and the screen will both shine into

your eyes.

Your hands and wrists

Hand and wrist injuries can happen because the hands and wrists are moved in the same way hundr-eds of

times. If you use a keyboard for a long time, follow these three rules: 1) Rest your wrists on some-thing. 2)

Keep your elbows (肘) at the same height as the keyboard. 3) Stop sometimes and exercise your hands, wrists

and fingers in a different way.

Your back

Some people sit for many hours in front of a computer. If you sit in the wrong way, you can injure your

back or your neck. So you should sit with your back straight. The top part of the screen should be in front of

your eyes. Your forearms, wrists, hands and the upper part of your legs should all be parallel (平行) to the floor.

If you are sitting for a long time, get up every 30 minutes and exercise your arms, legs and neck.

Enjoy your computer, but use it safely.

1. A computer screen may injure your eyes if _____.

A. you sit 60 centimeters away

B. you remember to look away

C. your eyes are too close to it

D. the window is on your left or right

2. Hand and wrist injuries are caused when you _____.

A. get plenty of exercise

B. move in the same way again and again

C. rest your wrists on something

D. keep your elbows as high as the keyboard

3. Your eyes and hands will be safe if _____.

A. you work near a window

B. you often take rests from working

C. you use a keyboard for a long time

D. the window is behind you

4. It is good for your back and neck if you sit _____.

A. in the right way

B. for many hours

C. with the screen below your eyes

D. with your back leaning forward

5. What would be the best tide for the text?

A. How to protect your eyes

B. How to protect your hands and wrists

C. How to use a computer safely

D. How to protect your back

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题型：单项选择题

除具有清心镇惊、安神功效外，朱砂还有的功效是（）

A.活血散瘀

B.利尿通淋

C.聪耳明目

D.解毒疗疮

E.纳气平喘

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题型：单项选择题

单模光纤的纤芯标称直径为( )um，其标称波长为( )nm。

A．6/125
B．9/125
C．1310和1550
D．1300和1510

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题型：单项选择题 A1/A2型题

属于干扰微管蛋白合成的抗癌药是（）

A.阿霉素（多柔比星）

B.长春碱

C.顺铂

D.门冬酰胺酶

E.阿糖胞苷

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简述蛋白质的互补作用。

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