婴儿痉挛症的发病年龄为_______，典型脑电图表现为_______。
参考答案：1岁以内‖高峰节律紊乱
finishing his homework, he went to play basketball. [ ]
A. In
B. Upon
C. At
D. With
抗病虫育种的主要工作环节？
