diet是可數名詞嗎

　　例句

　　1.It makes sense to eat a reasonably balanced diet when slimming.

　　在減肥過程中保持飲食的營養相對均衡是明智的。

　　2.The radio had fed him a diet of pop songs.

　　他從廣播里聽到的都是千篇一律的流行歌曲。

　　3.Some cases of arthritis respond to a gluten-free diet.

　　無麩質飲食對一些關節炎患者有療效。

　　4.New diet books appear at a rate of nearly one a week.

　　新的飲食類書籍差不多一周出一本。

　　5.She lost 16 pounds in the first month of her diet.

　　她節食的頭一個月就減掉了16磅。