题目

空气和水是重要的自然资源，下列有关说法正确的是      （ ）   A．空气的成分按体积计算，氧气占78%，氮气占21%   B．推广使用乙醇汽油不能减少空气污染   C．电解水实验说明：水是由氢、氧元素组成的   D．过滤可以除去水中的所有杂质 答案：CTwo Day Free Parking If you spend $200 or more in our store, you will receive two days of free parking. Take this coupon to the service desk on level 4 to stamp!Buy one, get one free Buy one shirt or sweater at Henglong Mall, and get another shirt or sweater of the same value free.10% Off Show this coupon at the Book Store to get a 10% discount on any books you buy. We have lots of books to choose, including children's books, novels, travel guides and hobbies. You're sure to find something that you will enjoy.Free soft drink Buy any meal for at least $6 at Mike's Cafe, and receive a free soft drink. We serve the best hamburgers and snacks in the mall. Come in and try our delicious meals and our excellent service. You won't be disappointed!Half-price movie tickets Buy any full-price movie ticket on Tuesdays or Wednesdays, and you can buy a second ticket for a friend for only half price. The latest movies are all here.1.If you spend 200 dollars or more, you can_____________.A.get a CD free B.get a car freeC.get some stamps free D.get two days of free parking2.Buy one sweater at Henglong Mall, you may get another _____________free.A.cheaper sweater B.mor expensive sweaterC.sweater of the same price D.sweater of different price3.You can get a 10% discount on any books if you _____________at the Book Store.A.buy some gifts B.show a coupon C.buy some tickets D.buy some books4.If you want to have a free soft drink, you can go to_____________.A.Mike's Cafe B.the Book Store C.Henglong Mall D.the Movie House5.If Li Ping pays 20 dollars for a full-price movie ticket on Tuesday, he can buy a second ticket for only _____________dollars.A.5 B.10 C.15 D.20