剖视图可分类的种类中不包括（）
A、全剖视图
B、半剖视图
C、选择剖视图
D、局部剖视图
参考答案：C
下面最接近空调器的额定功率的是（ ）
A．1500W
B．200W
C．50W
D．10W
用所给单词的适当形式填空。
1. There ________(be) a teacher and thirteen students in the room.
2. His sister is very _________(help). She always helps others.
3. Her father cleans his car ________(two) a week.
4. Tom and Jack often practise ________(speak) Chinese.
5. Lily ________(not go) to school on Saturdays and Sundays.
