怎样画二次函数图像:This s an old clock.

来源:百度文库 编辑:高考问答 时间:2024/07/01 12:59:42
哪里有错?????

This is an old clock.

This's an old clock.

This's an old clock.

This's不能缩写,应写为this is

This is an old clock.

This is an old clock.