苯与氯在光的催化作用下,生成氯苯的反应是()反应。A.加成 B.消去 C.氧化 D. 发布时间:2017-12-25 13:20 │ 来源:www.tikuol.com 题型:单项选择题 问题: 苯与氯在光的催化作用下,生成氯苯的反应是()反应。A.加成B.消去C.氧化D.取代
题型:单项选择题 完形填空。 Christmas 1___________ my favourite holiday. 2___________ a holiday, people 3___________ work.Children don't 4___________ school. Christmas is special. 5___________ ? Because we 6___________Christmas trees, lights and Santa. He is a merry 7___________ . Children say he 8___________ toys on Christmas. We invite our family and friends 9___________ our house. We sing carols. 10___________ arehappy on Christmas.( ) 1. A. is( ) 2. A. In( ) 3. A. do( ) 4. A. go( ) 5. A. Why( ) 6. A. has( ) 7. A. man( ) 8. A. bring( ) 9. A. to( ) 10. A. usB. areB. AtB. don't B. comeB. WhereB. haveB. men B. broughtB. atB. TheyC. amC. OnC. doesC. go toC. WhatC. hadC. womanC. bringsC. onC. We 查看答案