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          Exploring the moon is a(n) _____ to China as well as the whole world. 

          A. opportunity
          B. challenge 
          C. reaction 
          D. threat 
          			
          

			
			
			
		
          



							
          
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				科目：高中英語
				來源：山東省期末題
				題型：單選題
			
          
									
          Exploring the moon is a(n) _____ to China as well as the whole world. 
          

          [     ]
          A. opportunity
           B. challenge 
          C. reaction 
          D. threat 
          

			
          
				查看答案和解析>>
			
          
		
          
				
          
			
          
				科目：高中英語
				來源：
				題型：單選題
			
          
									
          Exploring the moon is a(n)________ to China as well as the whole world．

          1. A.
            opportunity
          2. B.
            challenge
          3. C.
            reaction
          4. D.
            threat
          

			
          
				查看答案和解析>>
			
          
		
          
					
          
	
          
		
          


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