题目

完形填空。 I am a boy in South Korea. My English name is Tony. Recently (最近), a    1   named Engkey became my new teacher. Engkey teaches us     2   . It looks like a human. It can     3    around our classroom when it reads books and    4    with us. However, Engkey’s voice (声音) is not its own. An English teacher controls (控制) it. 5    the help of a special camera (摄像头) in the body of Engkey, the English teacher can   6   us and help us learn better. My robot teacher doesn’t need to have a rest    7    it never feels tire下列溶液中：①石灰水   ②Na2S溶液   ③KMnO4溶液  ④溴水  ⑤酸化的Ba（NO3）2溶液  ⑥品红溶液，不能区别SO2和CO2气体的是（　　） A、①B、①②C、①②⑤D、②④⑤