严禁外籍教师、外籍留学生在学校从事传播宗教、发展教徒的活动。
参考答案：对
用所给单词的适当形式填空。
1. It is a ______________ (sun) day.
2. Everyone ______________ (love) to sing.
3. I ______________ (go) to the park tomorrow.
4. Danny is ______________ (play) the piano now.
露天矿大气污染的主要因素有哪些？
