It‘s nothing serious,____doctor?用Yes,（it is serous）;要用No回答,后面就省略了it isn't serious看到错的答案支持率高,而正确的答案没有解释,现给出解释供参考

It‘s nothing serious,____doctor?用Yes,（it is serous）;要用No回答,后面就省略了it isn't serious
看到错的答案支持率高,而正确的答案没有解释,现给出解释供参考

1 -It‘s nothing serious,is it,doctor?
- Yes,it is very serious
2 A:It‘s nothing serious,is it,doctor?
B:No,it is nothing serious.

is it ；yes
nothing是否定词，所以用肯定is it。根据实际情况it's serious判断用yes