题目

我国“神舟”七号宇宙飞船的火箭发动机里使用液态氧，它所起的作用是（） A . 作燃料 B . 供给呼吸 C . 促使燃料迅速燃烧 D . 携带方便 答案：CSpecial Offers【1】A book is 40 yuan at Xinhua Bookstore. How much should you pay if you show this ticket to buy it?A. 40 yuan. B. 44 yuan. C. 36 yuan. D. 28 yuan.【2】What can Tom get for free after he has spent 7 yuan at Mike’s Cafe?A. A soft drink. B. The best hamburgers.C. The best snacks. D. A delicious meal.【3】 How long can you park your car for free at most after spending 118 yuan in RT-Mart?A. 1 hour. B. 5 hours. C. 6 hours. D. 7 hours.