儿童的皮肤毛细血管瘤应该（）。
A.成年后治疗
B.10岁后治疗
C.5岁后治疗
D.可不治疗
E.积极早期治疗
参考答案：E
— What ____ she often do in her spare time?
— She often plays the flute.[ ]
A. did
B. does
C. do
润滑油系统有哪些主要设备？
