下列能揭示原子具有核式结构的是( )
A：α粒子散射实验
B：天然放射现象
C：电子的发现
D：氢原子光谱是线状谱
下列各句中，标点符号使用正确的一项是( )
Lucy writes as ______ as Lily. They are both good students.
The thunder was so loud that it ______ me from a sound sleep.
- What do you often have for breakfast?
- I often have _________ egg and some milk.
