【判断题】待测金属离子M,N与EDTA生成配合物 ,可以用控制酸度的方法分别进行测定。
【简答题】A.Her twin sister often brings friends home and this annoys the speaker. B.They can't agree on the color of the room. C.They can't agree on the kind of furniture. D.The speaker likes to keep things ne...
【单选题】Jane made few mistakes in the exam, ____ ____?
【单选题】My sister with her boyfriend ______ England. You can call her next week.
【单选题】-Who is that girl over there? Is it your sister? -No, it _______be her. She is much taller. [ ]
【单选题】Joan and Jane are twins,but they have few interests() .
【单选题】—Jane wash’t in when Jack came,was she? —________,but she returned a few minutes later.
【单选题】配合的种类有间隙配合、过盈配合、()三种。
【单选题】My sister’s dream is to have her own shop ____ she can make her favourite cakes.