问题 问答题 简答题

早古生代的主要特征

答案

参考答案:

(1)生物界—后生动物迅速发展,海生无脊椎动物空前繁盛(环境分析、地层对比、生物成矿、生态分异、生物分区)

(2)属加里东构造阶段,稳定区和活动区并存,后期陆壳板块扩大和增生(陆相沉积、生物上陆)

(3)沉积类型复杂多样,奥陶纪末期冈瓦纳大陆发育冰川

阅读理解与欣赏
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     One famous artist Sheikh went back to his hometown. He hadn't seen one of his friends for many years, who was a __1__and needy man. When Sheikh asked about him, he was told by people that the man he was__2__was a rich man and no longer poor. Sheikh__3__to pay a visit to his friend.
    _4__talking with his friend, Sheikh asked him the __5__for the change in his situation. The man
replied that he had been so poor that he was forced to__6__some properties(财产)that belonged to him,
like furniture (家具).  By selling these things, he  had__7__some money enough to start a  __8__ with.
     As he was on his way back to his house with the__9__, he saw a poor lady__10__by the road. The
man asked the lady the reason, and she__11__ that  her  husband died and her children were __12__.
Hearing this, the man felt__13__for her, and on seeing that she__14__the money more than himself, he
gave all the money to her. He__15__home and spent the night, sad and__16__for his family.
     The next morning,__17__he was summoned(召唤) to the house of a rich man. He was told by the rich man that he had six thousand bags of__18__which he wanted to  sell  quickly and the man could  buy it at
a__19__price on loan(借用) from him. The poor man did so and sold the rice__20__. He took some
more bags several days later and in this way he was able to make much more money. Soon he became
rich.
( )1.A.clever    
( )2.A.living with
( )3.A.decided  
( )4.A.Until    
( )5.A.message  
( )6.A.sell      
( )7.A.saved    
( )8.A.travel    
( )9.A.money    
( )10.A.crying  
( )11.A.believed
( )12.A.hungry  
( )13.A.sadness  
( )14.A.took    
( )15.A.drove    
( )16.A.worried  
( )17.A.happily  
( )18.A.rice    
( )19.A.low      
( )20.A.slowly  
B.rich        
B.waiting for  
B.forgot      
B.Before      
B.reason      
B.make        
B.collected    
B.business    
B.news        
B.walking      
B.explained    
B.dangerous    
B.interest    
B.needed      
B.returned    
B.pleased      
B.surprisingly
B.meat        
B.fair        
B.quickly      
C.lazy        
C.asking about
C.refused    
C.After      
C.time        
C.keep        
C.paid        
C.family      
C.hope        
C.sleeping    
C.shouted    
C.crazy      
C.shame      
C.owned      
C.left        
C.excited    
C.carelessly  
C.vegetables  
C.high        
C.hardly      
D.poor        
D.listening to
D.tried      
D.While      
D.plan        
D.find        
D.wasted      
D.lesson      
D.furniture  
D.standing    
D.imagined    
D.angry      
D.pity        
D.earned      
D.stayed      
D.frightened  
D.unluckily  
D.clothes    
D.right      
D.finally