His father’s work is interesting but dangerous.A. a kind ofB. kindC. a kindD. kind of

问题补充：

His father’s work is interesting but dangerous.

A. a kind of

B. kind

C. a kind

D. kind of

答案：

A. a kind of

B. kind

C. a kind

(答案→)D. kind of

解析：此题考查kind of和a kind of的区别，前者表示一点，后者表示一种，句意：他父亲的工作令人感兴趣但是有点危险。所以选D。