常见的呼吸道传染病有那些？
参考答案：
常见的呼吸道传染病有肺结核病、流行性感冒、流行性脑脊髓膜炎、麻疹等。
选词填空（注意大小写）。
now tomorrow yesterday often
1. I ________ go home by bus.
2. ________ I am writing some Christmas cards to my friends.
3. I brought a Christmas tree to school ________.
4. I'm going to play football ________.
儿童式自我
