某人每年年末向银行存入1万元，已知银行存款年利率为10%，则10年后该人所能取出的本

“一屋不扫，何以扫天下？”这句话启示我们：锻炼意志要 [ ]

A．要经常打扫干净自己的屋子                

B．要从小事做起  

C．要从做大事开始                          

D．要有远大的目标

适形放疗要求各野到达靶区内P点的剂量率和照射时间的乘积之和为一常数，调整各野照射P点的时间的方法有（）

A.一维物理楔形板

B.组织补偿器

C.剂量补偿器

D.独立准直器动态扫描

E.以上所有均可

关于人造地球卫星下列说法中，正确的是（    ）

A．轨道半径是地球半径n倍的地球同步卫星的向心加速度是地表附近重力加速度的

1/n²倍

B．轨道半径是地球半径n倍的地球同步卫星的向心加速度是地球赤道表面物体向心加

速度的n²倍

C．地球同步卫星的线速度比地球上赤道处物体的线速度大

D．如果卫星因受空气阻力的作用，其半径逐渐减小，则它的势能逐渐减小，动能逐渐增大，机械能逐渐减少．

阅读理解。

     Starting the day on an egg could keep your blood pressure (血压) under control, research suggests.

Scientists have shown that eggs produce proteins with a function similar to that of powerful blood

pressurelowering drugs.

     The researchers, from the University of Alberta in Canada, showed that when eggs come in contact

with stomach enzymes (酶) they produce a protein that acts in the same way as ACE inhibitors, drugs

taken by millions around the world to lower blood pressure. Fried eggs proved particularly effective, but

more work is needed to show the effects outside a lab and in the human body.

     Earlier this month, British researchers declared that, contrary to popular beliefs, it is healthy to go to

work on an egg. They concluded that the type of cholesterol (胆固醇) found in eggs has little effect on

increasing heart disease risks.

     Researcher Professor Bruce Griffin, from the University of Surrey, said, "The wrong beliefs linking

egg eating to high blood cholesterol and heart disease must be corrected. The amount of fat in our diet

has an effect on blood cholesterol that is several times greater than the relatively small amount of

cholesterol found in eggs. The UK public do not need to limit the number of eggs they eat. They can be

encouraged to include them in a healthy diet as they are one of nature's most nutritious foods."

     The British Heart Foundation dropped its threeeggaweek limit in 2005.However,almost half of

Britons believe the limit still applies.

1. From the text we know that ACE inhibitors are________.

A. a kind of medicine      

B. a kind of protein

C .a kind of illness          

D. a kind of food

2. According to what Professor Bruce said , eggs________.

A. are the most nutritious food

B. have no effect on blood cholesterol

C. can be included in a healthy diet

D. are forbidden to be eaten in the UK

3. We can infer from the text that________.

A. drugs to lower blood pressure will be replaced by eating eggs

B. stomach enzymes mixed with eggs can cure heart diseases

C. most Britons agree the threeeggaweek limit should be dropped

D. about 50% of Britons think eating an egg a day is bad for their health

4. The text is meant________.

A. to introduce scientific findings about eggs

B. to introduce a medicine made from eggs

C. to tell people how to lower their blood pressure

D. to advise people to eat as many eggs as possible

期货公司缴纳的期货投资者保障基金在其（）中列示。

A．资产

B．营业成本

C．资本金

D．负债