[题目]下列对SO2和SO3的叙述正确的是( )A．通常条件下.都是无色气体.都易溶于水B．都是酸性氧化物.其水溶液都是强酸C．都可使品红溶液褪色.加热时红色又能再现D．都能跟碱溶液反应题目和参考答案——青夏教育精英家教网—

题目内容

【题目】下列对SO2和SO3的叙述正确的是( )

A．通常条件下，都是无色气体，都易溶于水

B．都是酸性氧化物，其水溶液都是强酸

C．都可使品红溶液褪色，加热时红色又能再现

D．都能跟碱溶液反应

【答案】D

【解析】通常条件下，SO3是固态，A项错误；二者都是酸性氧化物，SO2的水溶液是弱酸，B项错误；SO2具有漂白性，SO3没有漂白性，C项错误；酸性氧化物能和碱反应，D项正确。

练习册系列答案

（1）风带②的名称是_______。

（2）B地区受气压带、风带季节移动影响，气候特点是__________________。D地区受气压带、风带季节移动影响，形成______________气候（写气候类型的名称）。

（3）气压带③的名称是_____________，C地区在其控制下盛行_____________（上升或下沉）气流，气候类型为_____________（写气候类型的名称）。

【题目】短文改错

假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处，每处错误仅涉及一个单词的增加、删除或修改。

增加：在缺词处加一个漏字符号(∧)，并在其下面写出该加的词。

删除：把多余的词用斜线(＼)划掉。

修改：在错的词下画一横线，并在该词下面写出修改后的词。

注意：

1. 每处错误及其修改均仅限一词；

2. 只允许修改10处，多者(从第11处起)不计分。

I asked Jack, a friend of mine, what has happened to him that night. He said that he had just got into bed on about half past eleven when the floor began to shake under him. The bed was also started shaking. He jumped out of his bed rapid and wanted to turn the light on. But the floor was shaking such violently that he could hardly reach the lamp. It seemed to take him long time to get to it and turned it on. Then he went to look out of the window. He saw that the houses on the other side of the street was also shaking. Then he knew that was happening — an earthquake! He quickly put on his clothes and ran out into the street to waiting until it was safe to go back inside.