通常所指的第七类营养素是（ ）
A：牛奶
B：鸡蛋
C：膳食纤维
D：果珍
____is Li Lei?
补全对话，每空一词。
A: ____ time do you usually get up, Bob?
B. I usually get up ____ 6 o'clock.
A. So early? What do you do then?
B: I ____ my teeth and ____ a shower. Then I eat my breakfast.
A: ____ do you go to school?
B: At 8 o'clock.
H+ + In—(aq)