选择题：函数f（x）=x2-2x+1（x≤0）的反函数为（） A．f-1(x)=x+1(

题型：单项选择题

按五行生克规律，心的所胜是（）

A.肾

B.脾

C.肺

D.肝

E.胆

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题型：单项选择题

80586(Pentium) 80486DX相比，( )不是其新特点。

A．80586的片内高速缓存采用了分离式结构

B．80586具有高性能的浮点运算部件

C．外部数据总线64位

D．内部数据总线32位

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题型：完形填空

完形填空
At the beginning of this century, medical scientists made an interesting discovery: we are built not just of flesh and blood but also of time. They were __1__ to show that we all have 6'a body clock" 2__ us. which controls the 3_ and fall of our body energies, 4_ us different from one day to the next. The 5 _ 0f "a body clock" should not be too 6 _ since the lives of most living things are controlled 7 the 24-hour night-and-day cycle. We feel 8 and fall asleep at night and become 9__ and energetic during the day.lf the 24-hour-cycle is _10 , most people experience unpleasant 11 .For example, people who are not 12 to working at night can find that 13__ of sleep causes them to 14 _ badly at work. 15 the daily cycle of sleeping and 16 , we also have other cycles which 17 longer than one day. Most of us would 18 that we feel good on some days and not so good on 19 ; sometimes our ideas seem to flow and at other times, they _20__ do not exist.
( ) 1. A. anxious ( ) 2. A.inside ( ) 3. A. movement ( ) 4 A. showing ( ) 5. A. invention ( ) 6. A. difficult ( ) 7. A. from ( ) 8. A. dull ( ) 9. A. regular ( )10. A. disturbed ( )11. A. moments ( )12. A. prevented ( )13. A. miss ( )14. A. perform ( )15. A. With ( )16. A. working ( )17. A. repeat ( )18. A. agree ( )19. A. other ( )20. A.just	B. able B. around B. supply B. treating B. opinion B. exciting B. by B. tired B. excited B. shortened B. feelings B. allowed B. none B. show B. As well as B. moving B. remain B. believe B. the other B. only	C. careful C. between C. use C. making C. story C. surprising C. over C. dreamy C. lively C. rested C. senses C. expected C. lack C. manage C. Except C.living C. last C. realize C. all other C. still	D. proud D. on D. rise D. changing D. idea D. interesting D. During D. peaceful D. clear D. troubled D. effects D. used D. need D. control D. Rather than D. waking D. happen D. allow D. others D. yet

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题型：探究题

2008年5月1日，杭州市率先在西湖景区推行公共自行车交通服务。许多市民也开始不使用汽车而骑自行车上班。

（1）从环保角度看，这主要有利于减少城市的__________污染。

A．大气污染

B．水污染

C．土壤污染

D．白色污染

（2）骑车上班还有利于身体健康。体重80千克的金老师每天骑车（车的质量约20千克）上班“减肥”。若他以5米／秒的速度匀速前行，受到的阻力约为人与车总重的0.04倍，则他消耗的功率约为_______ 瓦。（g=10牛／千克）

（3）不同的运动方式，人体消耗的能量是不同的。由表中数据可知，金老师运动减肥的最佳方式是____________ 。

（4）5月份，国际油价突破每桶130美元。国内许多加油站前汽车排起了长长的车队，结合我国近年石油生产与消费量比较图，谈谈自行车公交化对我国能源发展的意义_________________________ 。

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题型：单项选择题

开断电缆以前，应与（）图纸核对相符。

A.电缆施工图

B.电缆接线图

C.电缆走向图

D.电缆剖面图

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函数f（x）=x2-2x+1（x≤0）的反函数为（） A．f-1(x)=x+1(

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