植物是造山理池不可缺少的元素，中国古代园林对植物的选择标准主要有三条：姿美、色美、味香。（）
参考答案：对
句型转换。
1. Do you have a baseball bat? (改为肯定句)
_____ _____ a baseball bat.
2. We have a ping-pong club. (改为否定句)
We _____ _____ a ping-pong club.
3. Sue plays tennis with her mother. (改为一般疑问句)
_____ Sue _____ tennis with her mother?
4. Jiang Cheng has a computer. (对画线部分提问)
_____ Jiang Cheng _____?
5. Betty's keys are in the drawer. (对画线部分提问)
_____ _____ Betty's keys?
铸铁是如何分类的？
