问三道语法题目25.The company said as well as giving customers faste

问三道语法题目
25.The company said as well as giving customers faster internet,4G would also be _________ big benefit to businesses.
A.for B.of C.with D.to
26.Instead of having to choose one or the other,we can benefit from ________ of the approaches.
A.every B.all C.both D.another
27.Dr.Margaret Chan was eventually selected as the world's top health official and it is the first time that a Chinese ________ such a high-ranking U.N.post.
A.holds B.had held C.will hold D.has held
25.A 26 C 27D

25.B.of 才是正确答案.“介词 of + 抽象名词 = 一个形容词”,这里的 of big benefit = very beneficial,非常有益处的.
26.both 两者都.因为前面说了 one or the other （一个或另一个）,说明这里有且只有两个方法可供选择.全句意思是“不要非得选择这个或另一个,我们可以从这两个方法中同时受益”,也就是两个方法都用.
27.it is the first/second/third...time that sb.has done sth.是一个固定句型,意思是“这是某人第一次/第二次/第三次等做某事”.“这是中国人第一次担任如此高级的联合国职位.”
希望我的解释正确.

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