题目

---I’d like to book a room for tonight.    ---Sorry, sir, but we don’t have any rooms ________ at the moment.     A. available         B. usable            C. suitable         D. comfortable.   答案：A下列不属于缓慢氧化的是（　　）A．动物呼吸B．酿造米酒C．红磷燃烧D．食物腐败