A:④⑤⑦⑧
B:①④⑤⑥
C:①②③⑥
D:①④⑤⑦
最近,由于气温下降使天然气需求量陡然增加,某城市有报道称天然气日缺20多万立方米,部分商户被停、限气.
We can see different signs in public places.Some____tell us what we should do.This sign is____.There is a picture of an animal in the____.It tells us to look out for animals.Some signs tell us what we should not do.We should not smoke in the forest.It____start a fire.That's why we see a "____" sign in the forest.Some signs tell us where to go.The bus and underground signs tell us where to find the stations.
下列函数中,y是x的反比例函数的是( )