维持泌乳的关键是（）
A.哺乳次数
B.母亲多食油汤
C.药物
D.哺乳的姿势
E.母亲年龄
参考答案：A
选一选。
1. This is a . [ ]
A. car
B. boat
2. I can see one .[ ]
A. planes
B. plane
3. — Is this a ?
— Yes, it is.
[ ]
A. ball
B. balloon
4. Look, I have a .[ ]
A. kite B. doll
5. Can I have a ?[ ]
A. cake
B. hamburger
应继份
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