45. The current economic reform in China is characteristic () its socialism.
A. of B. in C. by D. at (A)
be characteristic of 表现了。。。的特色;
其它含介词的短语还有：by means of… in spite of… in honour of… according to…
owning to… in addition to… rely on… be dependent on… comment on…
concentrate…on… be keen on… take charge of… be made up… be capable of…
be typical of… interfere with… be familiar with… be consistent with…
result from… 由于; result to… 导致; lie in ; run for… lead to ; refer to ; relate to ;
devote to ;adjust to ; break away from… prohibit from… consider as… be known as…
divide…into… aim at … die of… object to… persist in… equal to… be famous for
full of… guilty of 犯(罪); love for… desire for…