分组教学
参考答案:
班级课堂教学的一种形式。(1)依学生的残疾程度和发展水平把特点相近的儿童编为一组。(2)依教学的需要在一定时间在按某一原则把学生分成小组的教学。
阅读短文,判断正(T)误(F)。
Bear has a doorbell. If you visit him, you must ring his doorbell.
One day, Mr Panda visits him. He knocks at his door. After a while, Bear shouts in the room, "Please ring
the doorbell!" But Mr Panda doesn't hear it. He knocks again. This time, Bear opens the door and says, "Don't
knock at the door. I can't hear. Ring the doorbell, please."
( ) 1. Mr Panda has a doorbell.
( ) 2. Bear can't hear the knock on the door.
( ) 3. Bear doesn't want to see Mr Panda.
( ) 4. If you visit Bear, you have to ring his doorbell.
在实验室中,小明同学为了探究金属与盐溶液的反应规律,将一定质量的某种金属M的粉末放入AgNO3与Cu(NO3)2的混合溶液中,实验过程及现象如图所示,结合实际现象判断,小明同学得出的以下结论中,错误的是
A.滤液中一定没有银离子
B.滤渣中可能只含有银
C.滤渣中一定含有单质铜
D.加入的金属M可能是单质锌