(21) 
A.simple                     
B.primary                   
C.pure                        
D.regular

The meeting was put off because of pressure of time.
A.The meeting lasted much longer than usual.
B.The meeting started earlier because people wanted to leave early.
C.There was not enough time to hold the meeting.
D.The meeting was planned to start late because of time pressure.

(18) 
A.filled                                   
B.full                          
C.made                       
D.taken

(2) 
A.include                    
B.contain                    
C.enclose                   
D.consist

(30) 
A.by far    
B.at least     
C.even though  
D.for all

(25) 
A.freely
B.loosely
C.simply
D.entirely

(23) 
A.model
B.imitate
C.repeat
D.shadow

(16)  
A.controlling
B.handling
C.doing
D.playing

(12) 
A.task
B.operation
C.service
D.role

According to the passage, which of the following is TRUE?
A.The number of amphibians is decreasing rapidly.
B.The number of amphibians is increasing.
C.The number of amphibians is going up.
D.The number of amphibians staying constant.