4.下列反应中,调节反应条件以后,反应产物不会改变的是 ( )
A.钠与氧气 B.硫酸与铝片
C.二氧化硫与氨水 D.盐酸与铁粉
3.下列实验中,能达到预期目的的是 ( )
A.用过滤法除去Fe(OH)3胶体中的FeCl3
B.用25mL碱式滴定管量取20.00mLNa2CO3溶液
C.将SO2通入酸性KMnO4溶液中,可证明SO2具有漂白性
D.只需在淀粉KI溶液中滴加少量市售食盐配制的溶液,就可鉴别真假碘盐
2.化学科学需要借助化学专用语言来描述,下列有关化学用语正确的是 ( )
A.硫离子的结构示意图:
B.甲烷分子的球棍模型:
C.乙醇的结构简式:C2H5OH
D.漂白粉溶液在空气中失效:
1.美丽的海南岛四面环海,蕴藏着丰富的海水资源,下列有关海水综合利用的说法正确的是 ( )
A.从海水中可得到NaCl,电解熔融NaCl或其水溶液都可制得Cl2
B.因海水中含有镁元素,故不需经过化学变化就可以得到镁单质
C.利用蒸馏原理从海水中提取淡水是海水淡化技术发展的新方向
D.无论是海水波浪发电还是潮汐发电,都是将化学能转化为电能
第二节 书面表达(满分30分)
下面的图表显示了某校高三学生周末放假的学习生活情况。
Ways to spend the weekend
根据上图信息,请以 “Ways to spend the weekend” 为题,用英语写一篇100-120个词的短文。 要求如下:
1. 简要描述图中的信息;
2. 说明原因 (为了高效学习;锻炼身体;争分夺秒……);
3. 谈谈你的看法。
注意:文章标题和开头已给出(不计词数)
Ways to spend the weekend
As can be seen from the chart,
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第一节 短文改错(共10小题;每小题1分,满分10分)
下面短文中有10处语言错误。请在有错误的地方增加、删除或修改某个单词。
增加:在缺词处加一个漏洞符号(/\),并在其下面写上该加的词。
删除:把多余的词用斜线(\)划掉。
修改:在错的词下划一横线,并在该词下面写上修改后的词。
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。
例如: It was very nice to get your invitation to spend ∧ weekend with you. Luckily I was completely the am free then, so I’ll to say “yes”. I’ll arrive in Bristol at around 8 p.m. in Friday evening. on |
Senior three student will face the question after they pass by the college entrance examination. Should I choose a good major and a good university ? Some students prefer to consider majors first so that they can learn what they are interested . It will also make it possibly for them to take their favorite jobs in the future. However, those who think differently believes that the environment is important to one’s development. They also believe that students graduate from leading universities are often more likely to find a good job. In my opinion , the best choice is to choose a good major at a good university. But if we can obtain both, the first thing to consider is a good major, because no matter where we study, they can still achieve a lot in the certain field if we try our best.
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