问题
句型转换
句型转换。
1. Please be very quiet in the classroom. (改为否定句)
Please______very quiet in the classroom.
2. I like dolphins because they are friendly. (对画线部分提问)
__ _ you like dolphins?
3. Where do you come from? (改为同义句)
Where_____you ____ ?
4. We can't finish the work without your help.(用 if 变换句子)
We can't finish the work_____you_____us.
5. There is a football club near here. (改为一般疑问句)
a football club near here?
答案
1. don't be 2. Why do 3. are, from 4. if, don't help 5. Is there
mol/L硝酸、2mol/LNaOH溶液、20%KSCN溶液。完成以下实验探究过程：
作、预期现象和结论。
____ 溶液并滴加到试管A中，充分反应