卧室中的普通照明多选用( )。
A．吊灯
B．吸顶灯
C．发光顶棚
D．落地灯
E．各种嵌入式灯具
参考答案：A,B,C,E
The boy often gives a satisfactory answer to the teacher’s question，__________ just a minute.
So he’s usually the teacher’s pet.
A．thought
B．having thought
C．and to think
D．thinking
石油的凝固点一般为（）。
A.-50～30℃
B.-10～10℃
C.0～30℃
D.30～40℃
