these are socks的一般疑问句,肯定回答,否定回答,以及对socks划线部分提问,

问题描述:

these are socks的一般疑问句,肯定回答,否定回答,以及对socks划线部分提问,
还有一个疑问:划线部分提问不是要写成“what are they?还是what are these?

Are these socks?
Yes,they are.
No,they aren't.
What are these?