根据括号里所给的汉语写出英语单词。

1. My sister _____ (有) a small mouth, but I have a wide one.

2. His _____ (脚) are big, but mine are small.

3. Whose pen is this? It's _____ (她的).

4. I have a _____ (黄色) coat.

5. What color is your _____ (衬衣)? It's white

机械设备的选择，应遵循（）的原则。

A.技术上先进

B.分工合理

C.生产上适用

D.经济上合理

E.节省原料