问题 完形填空
完型填空。
     A man and his wife arrived in Boston by train.After getting off the train, they walked without an    1   
into the outer office of Harvard’s president.So they were stopped by his secretary and kept    2    
For hours, the secretary took no notice of them, 3 that the couple would finally become disappointed and    4   .But they didn’t.The secretary finally decided to disturb the president, though 5
     A few minutes later, the president walked towards the couple with a 6face.The lady told him, “We
had a son that 7 Harvard for one year.He loved Harvard.He was8_ here.But about a year ago, he
was accidentally killed.My husband and I would like to 9 a memorial(纪念物)to him, somewhere
on campus.”
     The president wasn’t moved .Instead, he was    10   .“Madam,” he said, “we can’t put up a
statue for every person who studied at Harvard and died.If we did, this place would look like a   11  ,” “Oh, no,” the lady 12 quickly.“We don’t want to put up a statue.We would like to give a 13 to
Harvard.” The president rolled his eyes and 14 at the couple and then exclaimed, ” A building! Do
you have any 15   how much a building costs? We have spent over $7,500,000 on the campus building
at Harvard.” For a moment the lady was silent.The president was 16 , because he could get rid of
them now.Then the lady turned to her husband and said quietly, “Is that all it costs to start a 17 ? Why
don’t we just start our own?” Her husband nodded. 18 their offer was turned down.Mr.and Mrs.
Stanford traveled to California where they founded Stanford University     19   after them, a memorial to
a son that Harvard no longer 20 about.
( )1. A.choice  
( )2. A.waiting
( )3. A.hoping  
( )4. A.go down  
( )5. A.hopelessly
( )6. A.pleasant
( )7. A.attended
( )8. A.clever  
( )9. A.set about
( )10.A.satisfied
( )11.A.park    
( )12.A.explained
( )13.A.building
( )14.A.laughed  
( )15.A.suggestion
( )16.A.bored    
( )17.A.department
( )18.A.Once    
( )19.A.named    
( )20.A.talked  
B.decision  
B.standing
B.finding  
B.go out   
B.carefully
B.funny    
B.visited  
B.brave    
B.set up    
B.excited  
B.cemetery  
B.expressed
B.yard      
B.shouted  
B.idea      
B.astonished
B.university
B.While    
B.looked   
B.knew      
C.acquaintance
C.sitting     
C.realizing  
C.go away    
C.unexpectedly
C.cold        
C.studied    
C.proud      
C.set down    
C.shocked    
C.garden      
C.refused    
C.playground  
C.glanced    
C.thought    
C.interested  
C.business    
C.Since      
C.taken      
C.heard      
D.appointment
D.talking 
D.imagining  
D.go around  
D.unwillingly
D.sad        
D.served      
D.happy      
D.set off    
D.ashamed    
D.museum      
D.admitted    
D.square      
D.called      
D.opinion    
D.pleased    
D.club        
D.Though      
D.followed    
D.cared      
答案

1-5.DAACD    6-10.CADBC   11-15.B AACB    16-20.DBCAD

计算题

上海国际一级方程式赛车场呈“上”字造型,赛道总长约5.4公里,拥有14个不同转弯半径的弯道和9种不同组合的赛道。赛车比赛中,车手要不断改变赛车的速度和运动方向。赛车比赛精彩激烈、难度大、科技含量高。

(1)为了保证比赛的安全,赛场安排了巡警,如图是巡警所用的某品牌电动巡逻车,其主要技术参数如表所示。已知该电动巡逻车在水平路面上匀速行驶时所受的阻力为人车总重的0.04倍,设该电动机能把电能全部用来牵引巡逻车克服阻力做功。总质量为220kg的四名巡警乘坐该车,在水平路面上以额定功率匀速行驶10min。求:

①电动机消耗了多少电能?

②巡逻车通过了多少路程?

③若轮胎与地面的总接触面积是9×10-2m2,巡逻车停止时,人和车对地面的压强是多大?(g取10 N/kg)

(2)赛车运动对汽车工业的促进作用很大,为节约能源.目前汽车刹车器均采用油压制动。油压制动刹车时消耗的机械能以内能形式排放掉,形成能源的浪费。现有一种汽车再生制动器,能把汽车刹车制动时消耗的机械能转化为电能而储存起来,有效地利用了能量。将汽车正常行驶时关闭发动机,直至汽车停止的过程中,通过再生制动器将动能转化为电能的效率称为储能效率。从能量转化的角度看,汽车再生制动器相当于          。(电动机/汽油机/发电机)

(3)某次测试过程中,先让汽车正常行驶,然后关闭发动机,分别测出开启和关闭再生制动器两种情况下,汽车通过的路程s与对应的速度大小v,计算出动能Ek,作出Ek-s图像,如图。可以看出,开启再生制动器进行测试的图线是①、②中的_______,该次测试中储能效率为______。

单项选择题