Jack has a good habit of keeping a diary every day;he is very good at writing.A. becauseB.

问题补充：

Jack has a good habit of keeping a diary every day;he is very good at writing.

A. because

B. as

C. as a result

D. after all

答案：

A. because

B. as

(答案→)C. as a result

D. after all

解析：本题考查副词短语。as a result “因此,结果”,在句中作状语,其前常有一个表示原因的句子。