一杯牛奶是可數名詞嗎

　　例句：

　　He measured out a cup of milk and added it to the mixture.

　　他倒了一杯牛奶，摻了進去。

　　May I have a cup of milk?

　　我可以要杯牛奶嗎？

　　Please give me an apple pie and a cup of milk shake.

　　麻煩，我要一個蘋果派和一杯奶昔。