3.下列变化过程需要吸收能量的是
A.2H2 + O2 = 2H2O B.CaO + H2O = Ca(OH)2
C.Cl + Cl → Cl2 D.H2 → H + H
2.乙烷中混有少量的乙烯,欲除去乙烯可选用的试剂是
A.NaOH溶液 B.蒸馏水 C.溴水 D.Na2CO3溶液
1.下列化合物中既含有离子键又含有非极性共价键的化合物是
A.CaBr2 B.Mg3N2 C.Na2O2 D.CH3CH2OH
3、 可能用到的相对原子质量:
H-1,C-12,N-14,O-16,Fe-56,Cu-64,Zn-65
Ⅰ卷(共60分)
以下30小题,每小题只有一个正确选项,每小题2分。
2、 将第Ⅰ卷的答案用2B铅笔涂在答题卡上,第II卷的答案写在答题纸上。
1、 请将你的姓名、班级、考号填写在答题纸的指定位置上;
3.work on,work at
work on 有三个意思: (1)研究,从事于……项目;(2)在……上工作;(3)对……产生影响;work at 意思为“用功于;从事于”。在表示此意思时,两者的区别是:work on 带有深入研究的含义。
应用
(1)The headmaster might accept our suggestion if someone works______him.
(2)In the fields,a group of girls were working______tomato plants.
(3)He is working hard______maths.
(4)He is working______a maths problem.
(5)In order to get a doctor’s degree,he is working hard______Shakespear.
答案:(1)on (2)on (3)at (4)on (5)on
典例剖析
[例1] (2004年全国卷Ⅰ,32)You can take anything from the shelf and read,but please______the books when you’ve finished with them.
A.put on B.put down C.put back D.put off
剖析:本题考查由put构成的词组,put back放回去;put on穿上,挂起来;put down放下,记下;put off表示延期,使(乘客)下车等。
答案:C
[例2] (2004年辽宁,26)Before the war broke out,many people______in safe places possessions they couldn’t take with them.
A.threw away B.put away C.gave D.carried away
剖析:本题考查动词短语。战争爆发前,人们会把带不走的财产放在安全的地方。故此处填“把……收起来放好”,put away正是此意。throw away扔掉,放弃;gave away放弃、储蓄;carry away带走。这三项均不符合语境。
答案:B
[例3] (2004年春季上海高考题)A fast food restaurant is the place ______,just as the name suggest,eating is performed quickly.
A.which B.where C.what D.there
剖析:where 引导定语从句,在从句中作状语。
答案:B
2.try to,try doing
try to意为“试,尝试;试图”,内含一种“试图……但并没达到”之意。而try doing 意为试着做看有什么样的结果。
应用
(1)Don’t shout at him;he is only trying______(help).
(2)I’m going to try______(cook)a paella this evening.
(3)I tried______(persuade)him and succeeded.
(4)I tried______(persuade)him but in vain.
答案:(1)to help (2)cooking (3)persuading (4)to persuade
1.过去分词和动词-ing作状语时的区别:
过去分词一般表示完成和被动,而-ing形式往往表示进行和主动。
应用
(1)The woman sat in the armchair______(watch)TV.
(2)The old man sat in bed______(surround)by his children.
(3)______(bury)deep down in the earth,the dead forests rotted away and became coal.
答案:(1)watching (2)surrounded (3)Buried
4.in common共同(的),共有(的),公用(的)
例句集锦
They had a lot in common and got on well.
他们有许多共同处,所以相处得很好。
Tom’s parents have little in common in their manners.
汤姆父母的举止极少有相似之处。
The two countries have a lot in common.
这两个国家有许多共同之处。
相关归纳
(1)in common with...和……相同
In common with most educated young men he prefers classical music to jazz.
如同大多数受过教育的人一样,他也喜欢古典音乐而不喜欢爵士乐。
In common with most young people,he likes playing computer games.
像多数年轻人一样,他喜欢电脑游戏。
(2)out of(the) common 不平常的,非凡的
He is a poet quite out of common.
他是个非同寻常的诗人。
●必背句型
get+p.p.
教材原句
The center itself got started in the early 1980s.
那个中心在20世纪80年代早期开始启动。
特别提示
get+p.p.可表达两种意义:(1)与形容词性的过去分词连用表示变成(某种状态)。get tired变得疲倦;get bored变得厌烦;get drunk 喝醉;get married 结婚(2)被;受
补充例句
(1)He was getting more and more puzzled.
他愈来愈感到迷惑。
(2)He got caught in the rain.
他被雨淋了。
(3)They all got punished.
他们都受到了惩罚。
(4)They have got divorced.他们离婚了。
疑难突破
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