句型转换，每空一词。

1. She does morning exercises every day. (改为一般疑问句)

________ she _________ morning exercises every day?

2. This elephant is from Africa. (同义句转换)

This is __________ _________ elephant.

3. This kind of animal eats grass and leaves. (改为否定句)

This kind of animal __________ _________ grass __________ leaves.

4. Does Jimmy have bread for breakfast every morning? (作否定答)

No, he _______.

5.Is this your schoolbag? (作肯定答)

Yes, ________ _______.

下列各组物质间的反应，要借助酸碱指示剂才能判断出反应发生的是(   )

A．锌与稀盐酸

B．烧碱与稀硫酸

C．氧化铁与稀硫酸

D．硫酸铜溶液与氢氧化钠溶液