正确理解和应用化学用语是重要的学科素养。下列说法正确的是（ ）
43中氮元素的化合价相同
B．三种微粒的最外层电子数相同，化学性质相似
22中都含有氧分子
22中数字“2”均表示每个分子中含有的氢原子个数
We got so wet.We had _________ umbrellas__________ raincoats with us!（ ）
either；or
both；and
neither；nor
not only；but also
﹣﹣﹣Would you like to go out for dinner tonight？
﹣﹣﹣No，I'd rather ______________ at home.（ ）
to eat
eating
eat
ate
Don't keep up with him,he runs __________ than me.（ ）
much faster
even worse
less carefully
more carefully
We left __________such a hurry that we forgot our tickets.（ ）
on
for
to
in
﹣﹣﹣They've bought the sick children some toys and flowers.
﹣﹣﹣So they have._________nice of them!（ ）
How
What
How a
What a
三种微粒的最外层电子数相同，化学性质相似三种微粒的最外层电子数相同，化学性质相似
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