1) ____ is not dreaming. 2) _____, imagination is being creative. We may very well 3) _____ it all our inventions and innovations. Without imagination, we would still be cavemen. Knowledge is important but imagination is even more crucial. Knowledge serves as the 4) ____ for imagination. Backed by knowledge accumulated (积累) in the past, gifted with 5) _____ and working determinedly, talented scientists are able to make 6) _____ leaps in their research. Imagination is much needed in cleaning up the 7) _____ mankind has created with global warming, as well as in dealing with such problems as the frequent 8) _____ of deadly diseases, and the 9) _____ relationship between the rich and the poor.

         Don't get confused. 1) ____ is not dreaming. 2) _____, imagination is being creative. We may very well 3) _____ it all our inventions and innovations. Without imagination, we would still be cavemen.  

         Knowledge is important but imagination is even more crucial. Knowledge serves as the 4) ____ for imagination. Backed by knowledge accumulated (积累) in the past, gifted with 5) _____ and working determinedly, talented scientists are able to make 6) _____ leaps in their research. 

          Imagination is much needed in cleaning up the 7) _____ mankind has created with global warming, as well as in dealing with such problems as the frequent 8) _____ of deadly diseases, and the 9) _____ relationship between the rich and the poor.