Computers can do a lot of things nowadays, but _____ more still need to be done by manA.a large amount ofB.a great dealC.a good many ofD.a great many
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D解析考查短语辨析。a large amount of 许多的，大量的，后修饰不可数名词，a great deal 副词，非常，a good many of，of去掉后修饰棵树名词复数，a great many后修饰棵树名词复数。句意：现在电脑能做许多事情，但是许多事情更需要人来做。所以用a great many后省略了things，故选D。