1. If you don’t know the word, why don’t you ___ in the dictionary?
　　A. look at it                     
　　B. look after it                           
　　C. look up it                
　　D. look it up
　　2. Because of my poor English I’m afraid I can’t make myself____.
　　A. understand          
　　B. to understand                  
　　C. understanding          
　　D. understood
　　3. To succeed in a scientific research project ___.
　　A. one needs to be persistent
　　B. persistence is needed
　　C. one needs be a persistent person
　　D. persistence is what one needs
　　4. Wood does not conduct electricity; _____.
　　A. so doesn’t rubber                                            
　　B. also doesn’t rubber
　　C. nor does rubber                                              
　　D. nor rubber does
　　5. I found ___ to answer all the questions within the time given.
　　A. no possibility       
　　B. there was impossibility   
　　C. impossible               
　　D. it impossible
　　答案：DDACD

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