填空题 Most scholars agree that Isaac Newton, while formulating the laws of force and gravity and inventing the calculus in the late 1600s, probably knew all the science there was to know at the time.In the【C1】ens_________350 years and estimated 50 million research papers and innumerable books have been published in the natural sciences and mathematics.The modem high school student probably now possesses【C2】_________scientific knowledge than Newton did, yet science to many people seems to be an impenetrable mountain of facts.
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【正确答案】 1、knowing    
【答案解析】该句的意思是“懂得很多并不一定就成为一名科学家。”空白处和前面出现的know a lot是同一个表达,需变成动名词作主语。填入knowing。