下列有关化学键的说法中正确的是( )
A:化学键主要包括离子键、共价键和氢键等
B:电解质的电离过程也就是化学键被破坏的过程
C:有化学键被破坏的变化一定是化学变化
D:共价化合物中可能含有离子键
节肢动物和环节动物的共同特征是( )
is your favourite song, Mr. Smart? ( )
We have classes from Monday to F____ .
My sister enjoys l____ to pop music.
I’m s____ for taking your pen by mistake.
The little boy cried s____ when his best friend moved to another city.
Lily has a good h____ of reading English stories every day.
—Thanks for your _________, but I think I can manage it myself.