A:I am certain he’ll make it.
B:That’s really tough.
C:Everything is going well with me.
D:Actually, there is no choice anyway.
下列句子没有语病的一句是( )
如图所示,小华同学穿着旱冰鞋用力向前推墙,她将向后运动,上述现象包含的物理知识有哪些,各试举出一个生活中的实例.
①____
实例:____
②____
实例:____ .