白勇第七章.26题

罗乐aaa

It is as difficult to prevent crimes against property as those that are against a person

A  those that are against a

b  those against a

C it is against a

D preventing those against a

E it is to prevent those against a

答案是E，但为什么B不行呢？crimes against property和those against a person对称

sc2015

it 是形式主语：
E: (To prevent crimes against property) is as difficult as (to prevent those against a person)