婴幼儿生理性哭闹最常见原因是
A．断乳
B．尿布潮湿
C．要挟家长
D．口渴和饥饿
E．昆虫叮咬
参考答案：D
This cat is weak.
It's ____________. [ ]
A. healthy
B. strong
C. sick
写出下列词的缩写形式
1. what is ______
2. I am ______
3. my name is ______
