---My son hardly ever eat vegetables it’s good for his health.-That is not a good habi

问题补充：

---My son hardly ever eat vegetables it’s good for his health.

---That is not a good habit.

A. and

B. but

C. although

D. through

答案：

A. and

B. but

(答案→)C. although

D. through

解析：此题重点考查连词辨析，句意：---我儿子几乎不吃蔬菜，虽然对他的健康不好---那不是一个好习惯。And表并列不合题意，D答案是介词，在此需要连词引导让步状语从句，故选C