一道英语冠词填空题：You'll catch___cold if you are not careful.
问题描述：
一道英语冠词填空题：You'll catch___cold if you are not careful.
一道英语冠词填空题：
--You'll catch___cold if you are not careful.
--Yes.Our school doctor says that it is easy to catch____flu these days.
要理由
答
a 没有特指某种感冒
the 特指某种流感