The cruelty of the terrorists towards the two Chinese engineers in Pakistan and of the terrorists towards America in September 11 filled everyone with horror.
A. those
B. that
C. one
D. it
网友回答
A. those
(答案→)B. that
C. one
D. it
解析：考查代词用法。that可代指单数可数名词也可带不可数名词，其后往往有介词短语作定语修饰。在本句中为避免重复that代指cruelty。