下列为初二学生准备的早餐中最合理的方案是
答案：B
三餐中主食是含淀粉的食物，另外，青少年要多吃含蛋白质的食物。
I thought Father would be better, but ______it is, he is getting worse, which makes me more worried.
A．before
B．as
C．because
D．after
什么叫反击过电压？有何危害？如何防止？
