She didn’t allow the accident to discourage her. On the contrary she began to work.A. as

问题补充：

She didn’t allow the accident to discourage her. On the contrary, she began to work.

A. as twice hard

B. twice as hard

C. twice as harder

D. harder twice

答案：

A. as twice hard

(答案→)B. twice as hard

C. twice as harder

D. harder twice

解析：考查倍数的用法。倍数应该放在as...as和比较级之前，排除A、D；as...as句型中用形容词、副词的原形，排除C。故选B。