Science writers must【C1】______information regarding scientific events. In this capacity, they make the information clearer and m

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问题     Science writers must【C1】______information regarding scientific events. In this capacity, they make the information clearer and more understandable and help readers to coordinate fresh information【C2】______the knowledge they already have【C3】______they can relate it to personal circumstances. Science journalism also means making readers curious and entertaining them. Entertainment is the most successful didactic form. Journalists supply reader’s【C4】______material for further education and opinion-formation, because, in a society【C5】______terms like growth, market economy and full employment are filled with new meanings and basic technical innovations such as microelectronic and genetic engineering effect social changes, continuing education is a political necessity. The science journalist also makes【C6】______to the reader fields of knowledge hitherto【C8】______to him, conveys the fascination of science and【C7】______readers to follow discussions and controversies between experts.
    Do the popular science publications accomplish all this? If one analyzes the science magazines【C9】______to, one comes to the conclusion that science journalism has reached a high degree of maturity and finds the necessary reader【C10】______.
【C7】

选项 A、know
B、known
C、unknowns
D、unknown

答案D

解析 考查后置定语。knowledge和him之间是被动的关系,所以应该用过去分词,可以排除A和C,B和D的意思相反。由前面的accessible可知,此处应该是unknown,即到目前为止还不知道的知识。故答案为D。
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