实验动物又称。（）
A.狭义实验动物
B.广义实验动物
C.经济动物
D.无特定病原体动物
参考答案：A
用所给单词的适当形式填空。
1. They _____ (visit) Shanghai next month.
2. That is an _____ (excite) story.
3. It's very important for us _____ (learn) English well.
4. We enjoyed _____ (our) in the park last Sunday.
5. I plan ______ (improve) my English this term.
WTRZ—2000型钻机温控系统控制空压机机油温度不超过（）℃。
A、80
B、90
C、95
D、105
