填一填。
53-5=____, 53-6=____, 53-7=____, 53-8=____.
Crack cocaine is the most____(上瘾)form of cocaine.
The factory last month because it caused too much pollution.
请回答下列问题:
多音字组词
度:dù____、duó____
只:zhǐ____、zhī____
调:tiáo____、diào____
恶:è____、wù____
下列关于元素第一电离能的说法不正确的是( )