It was the surprising degree of accuracy that the old man predicated with shocked the pub

问题补充：

It was the surprising degree of accuracy that the old man predicated with shocked the public.

A. how

B. that

C. who

D. which

答案：

A. how

(答案→)B. that

C. who

D. which

解析：句意：这是老人预测的惊人的精确度震惊了公众。这里是强调句，结构是It is/was+强调部分+that+其余部分，判断是否是强调句的方法是：去掉强调结构，如果这句话还是成立的，就是强调句，拿这句话举例，如果去掉强调结构，就成了the surprising degree of accuracy that the old man predicated with shocked the public.由此可知这句话是成立的，所以是强调句，强调的是这句话的主语。所以选B。