683.That educators have not anticipated the impact of microcomputer technology can hardly be said that it is their fault: Alvin Toffler, one of the most prominent students of the future, did not even mention microcomputers in Future Shock, published in 1970.

(A) That educators have not anticipated the impact of microcomputer technology can hardly be said that it is their fault

(B) That educators have not anticipated the impact of microcomputer technology can hardly be said to be at fault

(C) It can hardly be said that it is the fault of educators who have not anticipated the impact of microcomputer technology

(D) It can hardly be said that educators are at fault for not anticipating the impact of microcomputer technology（D）

(E) The fact that educators are at fault for not anticipating the impact of microcomputer technology can hardly be said

这是在网上下的一个解释，本来就不理解C和D里面it都在句首为什么一个对一个错，还加上这个解释一弄完全找不着北了，请哪位NN来帮忙解释一下C和D的区别啊？看了讨论贴也没看明白，所以再次提出来了...谢谢！

683, sec19-03

A) 句式选择错。
B) 同上。
C) it没有明确指代，that后不是强势句。
D) 错。表达It can hardly be said that; be at fault (for doing)
E) 同A

at fault: if someone is at fault, they are responsible for something bad that has happened

C里有个it指代什么?而且前面有个形式主语,这里再用it的话会比较的混乱,应该尽量的避免.其实at fault是个固定搭配.