Hello! I'm Victor.I have a bed, a desk, two chairs and a computer in my bedroom.My bed is small but very nice.It's blue because I like blue very much.My desk is big.It's white.You can see a computer and so many books on it.I do my homework here.I have two chairs.One is big and one is small.The big one is near the bed.The small one is near the window.I like my room.

H₂（g）+ $\frac{1}{2}$ O₂（g）═H₂O（g）△H=a kJ•mol^﹣1

H₂（g）+ $\frac{1}{2}$ O₂（g）═H₂O（l）△H=b kJ•mol^﹣1

2H₂（g）+O₂（g）═2H₂O（l）△H=c kJ•mol^﹣1

关于它们的下列表述正确的是（   ）

①夏季来了，西红柿大量上市，会由E向E4移动

②禽流感时期家禽市场冷清，会由E向E1移动

③流感肆虐时期，板蓝根需求大增，会由E向E4移动

④猪饲料价格上涨，猪肉价格上涨，会由E向E2移动