词汇与语法知识
1、 We are using up our natural resources too quickly and at the same time we are __ our environment with dangerous chemicals.
A． protecting
B． saving
C． polluting
D． fighting
2、Color—blind people often find it difficult to________ between blue and green．
A．divide
B．distinguish
C．separate
D．differ
3、It__________John and Kate who helped me the other day．
A． is    
B． was   
C． are    
D． were
4、 You __ yesterday if you were really serious about the job.
A． ought to come
B． ought have come
C． ought come
D． ought to have come
5、-- Have you ever played bridge?
-- Yes. We__________ on weekends when I was in college.
A． would have played                  
B． should have played    
C． used to play                        
D． had played
6、 Don't forget to post the letter for me, __?
A． do you
B． will you
C． are you
D． can you
7、 How I wish every family __ a large house with a beautiful garden!
A． has
B． had
C． will have
D． had had
8、The US president__________ a three-day official visit to China last month.{Page}


9、You can，never __________that fe1loW for help at a critical moment． {Page}
 

10、If________ ，irrigation can be harmful．{Page}

责编：cxy  评论 纠错