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          【題目】Charles Darwin explained the ________ of species on earth in his book that came out in1859.
          A.ancestorB.originC.beliefD.custom
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          【答案】B
          【解析】
          考查名詞。句意：查爾斯·達爾文在他1859年出版的書中解釋了地球上物種的起源。A. ancestor祖先；B. origin起源；C. belief信仰；D. custom習(xí)慣，風(fēng)俗。結(jié)合句意可知答案為B。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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