在门的种类中，适用于各种大小洞口，尤其是宽度很大的洞口，五金复杂，安装要求高的门是( )。
A．平开门B．推拉门C．升降门D．折叠门
参考答案：D
用所给单词的适当形式填空。
1. _____ (be) your mother in Beijing last week?
2. He often _____ (play) basketball after school when he was a studerit.
3. —What ______you_____ (do) last night?
—I _____ (watch) TV with my parents.
4. —Why_____Iucy_____ (sleep) in the class this morning?
—Because she went to bed very late last night.
5. I _____ (forget) to bring my MP3 with me today.
构成侧颅底的小区有（）。
A.7个
B.6个
C.5个
D.4个
E.3个
