题目

（1）如图中A、B分别是某微粒的结构示意图，回答下列问题： ①若A是某阳离子的结构示意图，则x可能是下列中的____________。（填字母序号）       a. 8 b. 10c. 11 d. 12 ②若B表示某原子的结构示意图，则y=____________。 ③若A中x=12，则A、B所表示的元素形成化合物的化学式为_____________。 （2）将一定量的乙醇（C2H6O）和氧气置于一个封闭的容器中引燃，测得反应前后各物质的质量如下表： 物质乙醇氧气水二氧化碳X 反应前质量/g4.68.0000 反应后质量/g005.44.F     Basketball is one of the most popular sports in the world. Basketball was 1 in 1891 by Jim Naismith.It 2 an Olympic sport in 1936. It is played with a ball and a hoop. Teams win 3 putting the ball through the hoop.     Basketball has become more and more 4 . It is fun to play basketball. Basketball has a very fast and exciting 5 of play. It is easy to 6 . You can practice it often. The sport is also just as good to playone-on-one 7 it is to play 5-on-5,so you don't need too many 8 to start a game.     All you need to play basketball is a ball and a hoop. Many 9 throughout the world (especially in the US) have hoops. So it is easy to start a game with just a 10 .     Some of the world's greatest athletes are basketball players. The game is 11 excitement. So it is fun to 12 it. Every country has lots of basketball fans. Basketball is an all-weather sport. Basketball is often played 13 ,like in parks or in streets,but it is also a winter sport that is played indoors. 14   you can play basketball all year round. Basketball has had a number of famous players. This has 15 to make basketball a popular sport. Perhaps the most famous and unforgettable basketball player of all time is Michael Jordan.() 1. A. made   B. produced   C. discovered   D. invented() 2. A. created   B. faced   C. became   D. organized() 3. A. in   B. by   C. on   D. from() 4. A. interesting   B. popular   C. delicious   D. difficult() 5. A. idea   B. duty   C. way   D. thought() 6. A. do   B. have   C. buy   D. learn() 7. A. like   B. than C as   D. so() 8. A. words   B. food   C. advantage   D. people() 9. A. supermarkets   B. playgrounds   C. libraries   D. restaurants() 10. A. table   B. bike   C. ball   D. cap() 11. A. full of   B. afraid of   C. bad for   D. used for() 12. A. eat   B. read   C. watch   D. hear() 13. A. outdoors   B. indoors   C. inside   D. outside() 14. A. So   B. But   C. And   D. Or() 15. A. allowed   B. expected   C. helped   D. changed