题目

书面表达 以 “My favourite sport ” 为题，简单介绍你体育活动的情况，根据提示: Have a --- collection , like --- best, soccer, baseball, often , play 等. 答案：My name is Tom Green. I’m 13. I’m in Class 4, Grade 7 now. I like sports very much, and I have a great sports collection. I have four baseballs, three basketballs, two ping-pong balls and five tennis balls. I play sports every afternoon. I want to be in the School Tennis Club.（2009?泰州）为了除去物质中的杂质（括号内物质为杂质），所选用试剂和操作方法都正确的是（ ）  物  质选用试剂（过量）操作方法AO2（N2）铜网加热BCu（Fe）稀盐酸加入稀盐酸充分反应后过滤、洗涤CCuSO4溶液（H2SO4）氧化铜加入氧化铜粉末充分反应后过滤D盐酸（H2SO4）硝酸钡溶液加入硝酸钡溶液充分反应后过滤A．AB．BC．CD．D