质量是6.5×107mg的物体可能是( ) A.一个人 B.一只小狗 C.一辆卡

题型:选择题

问题:

质量是6.5×107mg的物体可能是(  )

A.一个人

B.一只小狗

C.一辆卡车

D.一本书

考点:质量的估测质量的单位换算
题型:选择题

The oceans and seas ______ the islands are more or less polluted.

A.surrounding

B.surrounded

C.are surrounded by

D.are surrounding

题型:选择题

下列说法正确的是

A.互为同位素

B.氯气能使潮湿的蓝布条变为白色,说明氯气有漂白性

C.将1体积c1mol/L的硫酸用水稀释为5体积,稀溶液的浓度为0.2c1mol/L

D.焰色反应一定发生化学变化

题型:选择题
完形填空
     A serious car crash leads one woman to rediscover her faith in human kindness.
     In March last year, the car I was driving was__1__in a serious crash with another car on a country
road. I soon__2__myself at the centre of a frenzy of activity, surrounded by paramedics, police, rescuers
and members of the local community. An enormous can opener was used to__3__me out of my wrecked car and__4__an ambulance.
     Over the next eight hours, I was transported to hospital, dragged up, Xrayed and diagnosed (诊断)
with a broken neck. Knowing that I'd__5__death by a fraction of a second sustained me throughout the
long wait in the emergency ward and__6 _me to deal with the visible distress of my hospital visitors.
     Only after I'd convinced the last friend to__7__could I direct my energies inwards. Flitting in and out
of my line of vision during my hospital__8__was the Red Cross lady, a gentle__9__in white who, from
time to time, popped her head in to__10__cups of tea. After the visitors had gone, she ventured further
into my cubicle to__11__if I was all right.
     I found myself__12__her everything: about the shock of the__13__, my feats for my family as a
result of my injuries-about my whole life. While I__14__for an ambulance to transport me to another
hospital, she stood by my trolley and_15_my hand as I offloaded all the emotion I'd stoically withheld
(强忍着的) from my family. She__16__, quiet and nonjudgmental.
     Even now, the__17__that I have her contact details provides me with great__18__. I look forward
to a day in the nottoodistant future when my guardian angel and I can meet again, in__19__
circumstances.
     In times of crisis, faith can sustain us: for me, my faith in human nature, reawakened by the__20 _
of a stranger, has helped ease my journey back to recovery.
(    )1. A. caught      
(    )2. A. imagined    
(    )3. A. push        
(    )4. A. into        
(    )5. A. survived    
(    )6. A. advised      
(    )7. A. assist      
(    )8. A. stay        
(    )9. A. patient      
(    )10. A. make        
(    )11. A. claim      
(    )12. A. presenting  
(    )13. A. accident    
(    )14. A. hoped      
(    )15. A. held        
(    )16. A. puzzled    
(    )17. A. knowledge  
(    )18. A. progress    
(    )19. A. unforeseen  
(    )20. A. sympathy    
B. trapped    
B. found      
B. force      
B. onto      
B. met        
B. forced    
B. leave      
B. visit      
B. performa  
B. offer      
B. consult    
B. showing    
B. incident  
B. prepared  
B. lent      
B. doubted    
B. belief    
B. pride      
B. happier    
B. strength  
C. lost        
C. devoted    
C. get        
C. off        
C. beat        
C. ordered    
C. participate
C. operation  
C. presence    
C. drink      
C. conclude    
C. giving      
C. event      
C. waited      
C. moved      
C. stopped    
C. power      
C. surprise    
C. strange    
C. kindness    
D. involved      
D. dreamed      
D. turn          
D. on            
D. feared        
D. helped        
D. come          
D. appointment  
D. physician    
D. take          
D. check        
D. telling      
D. occasion      
D. watched      
D. waved        
D. listened      
D. privilege    
D. comfort      
D. extreme      
D. donation      
题型:选择题

冷却空气小于或等于40℃时电机绝缘材料绝缘等级F的允许工作温度为()。

A.105℃

B.120℃

C.155℃

D.185℃

题型:选择题

垂体前叶功能减退激素替代疗法不包括

A.强的松
B.雌激素
C.甲状腺片
D.甲基睾丸素
E.泌乳素

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