It’s important to eat a diet.A. balanceB. balanced C. balancing D. balances

问题补充：

It’s important to eat a diet.

A. balance

B. balanced

C. balancing

D. balances

答案：

A. balance

(答案→)B. balanced

C. balancing

D. balances

解析：词义辨析。修饰名词diet，用形容词balanced均衡的。吃均衡饮食是重要的。