— I’m ______ to eat a horse now!

— Really? But I don’t have ______ for you. It’s a great pity.

A．enough hungry; food enough

B．hungry enough; enough food

C．hungrily enough; food enough

D．enough hungry; enough food

当右心房收缩时，心脏内血液的流动情况，正确的是（ ）

A．右心房→左心室，此时房室瓣打开

B．右心房→右心室，此时房室瓣打开

C．右心室→右心房，此时房室瓣打开

D．右心房→右心室，此时房室瓣关闭