高考课标2答案_高考新课标全国2卷

解答：

分析：

此题是选修4-5：不等式选讲的题目，考察了绝对值不等式的应用，分类讨论思想。

第一小问，直接运用绝对值不等式即可

第二小问，令x=3后，可以看作解一个关于a的绝对值不等式

解此类绝对值不等式，关键在于讨论a的范围从而去绝对值

由于a>0，3+1/a=0的零点是-1，3-a的零点是3

所以只需以3为界去绝对值，解去绝对值后的不等式，最后对所以的情况取并集即可。

人教版新课标2012年高考英语一轮单元总复习必修二

Ⅰ.单词拼写

1．There is no________(怀疑)that he will attend the meeting on time.

答案：doubt

2．It________(使惊愕)her that he could be so calm at such a time.

答案：amazed

3．The woman________(挑选)the best things from the shop.

答案：selected

4．I’ll meet you at the ________(入口)of the zoo tomorrow.

答案：entrance

5．After a long ________(辩论)，the bill was passed.

答案：debate

Ⅱ.选词填空

at war；in search of；no doubt；think highly of；in return for

1．The hungry boy rushed into the house ________ something to eat.

答案：in search of

2.The boy’s father ________ the man who saved his son from the lake.

答案：thinks/thought highly of

3．Those countries have been ________ for a long time.People there suffer a lot.

答案：at war

4．I work hard ________ those who care for me，help me and love me.

答案：in return for

5．There is ________ that he will be punished for what he has done.

答案：no doubt

Ⅲ.易错模块

1．(2008年高考辽宁卷)Please remain________；the winner of the prize will be announced soon.

A．seating B．seated

C．to seat D．to be seated

解析：选B。本题考查动词用法。句意：请在座位上坐着；很快就会宣布获奖者。seated是形容词，表状态，此处作表语。remain/be seated“保持坐着的状态”。

2．It was already past midnight and only three young men________in the tea house.

A．left B．remained

C．delayed D．deserted

解析：选B。句意为：早已过了半夜，仅有3位年轻人还留在茶房。remain作系动词可跟名词、介词短语、现在分词、过去分词，不定式的被动式作表语。

3．It remains________whether Jim’ll be fit enough to play in the finals.

A．seen B．to be seen

C．seeing D．to see

解析：选B。考查动词辨析。remain to be done“有待于……”，因为it是动作的承受者，所以用了动词不定式的被动语态。

4．I’m afraid we’ll have to work extra hours for there are still some problems ________.

A．remaining to settle B．remaining to be settled

C．remained to talk about D．to remain to discuss

答案：B

Ⅳ.语法专练

本单元语法——定语从句(Ⅲ)

1．The lecture was called off five minutes before it was supposed to start，________ made the audience angry.

A．what B．that

C．when D．which

解析：选D。考查定语从句。which made the audience angry 为非限定性定语从句，which是关系代词，指代整个主句的内容。

2．Now their talks have reached a key stage________ one side must give in to the other.

A．which B．that

C．where D．how

解析：选C。考查定语从句。当先行词为stage，case，position，situation，degree等词，且关系词在定语从句中作状语时，关系词通常用where。

3．He gave us another piece of advice，________of great help to the research work.

A．which I think is B．which I think it is

C．I think which is D．I think it is

解析：选A。 which引导非限定性定语从句，在从句中作主语，I think是插入语。

4．Rescuers are still searching for the other 19 missing miners，________survival chances are small.

A．who B．which

C．whom D．whose

解析：选D。关系代词在从句中作定语，故用whose代指．..missing miners’。

5．A war is so cruel that it always causes great losses，________has happened in Iraq and other countries.

A．what B．which

C．as D．one

解析：选C。as引导非限定性定语从句，意为“正如”，在从句中作主语。

Ⅰ.单项填空

1．China，________the Third World，has made a great contribution to human beings.

A．belongs to B．to belong to

C．to have belonged to D．belonging to

解析：选D。belong to意为“属于”，其动词＋ing形式作状语表示主动。表示“中国属于第三世界”。

2．(2009年郑州市质量预测)As time went by，the plan they stuck________fairly practical.

A．to proved B．to proving

C．proved D．to be proved

解析：选A。本题考查主谓一致。此句主语为the plan，they stuck to为其定语从句，the plan的谓语动词用一般过去时。

3．A troop of carefully selected soldiers set out in search of those who might________the terrible coal mine accident.

A．live B．rescue

C．exist D．survive

解析：选D。考查动词辨析。survive幸存。句意为：一支经过精心挑选的部队出发去寻找在可怕的煤矿事故中可能幸存下来的人。live生活，居住；rescue援救，营救；exist存在，生存。

4．—Are you free after school?

—Sorry.I’ve planned to treat a friend of mine to dinner________for his help.

A．in addition B．in turn

C．in return D．in total

解析：选C。考查短语辨析。in return作为(对……的)回报。treat a friend of mine to dinner in return for his help意为“请我的一位朋友吃饭来回报他对我的帮助”。in addition此外；in turn轮流，又(对别人)做同样的事；in total总共。

5．With the development of science and technology，there is no doubt________ Chinese astronauts will land on the moon in the near future.

A．whether B．that

C．what D．which

解析：选B。考查固定句型。There is no doubt that...意为“毫无疑问……”，that引导同位语从句，解释说明doubt的具体内容。

6．—David，could I use your car?

—Sorry，there is something wrong with it.I will have it________ this afternoon.

A．repair B．to repair

C．repairing D．repaired

解析：选D。考查非谓语动词。it与repair之间为被动关系，故用repair的过去分词形式作宾语it的补足语，构成have sth.done结构。

7．We all know that hard working and plain living are fine________ of our Chinese people.

A．qualities B．manners

C．deeds D．acts

解析：选A。考查名词辨析。quality品质。句意为：我们都知道艰苦朴素是我们中国人的优良品质。manner礼貌，举止，方式；deed行动，事迹；act行为，行动。

8．Your desk is crowded with too many unnecessary things，including used papers and books.You’d better ________some of them.

A．remain B．resist

C．remove D．renew

解析：选C。考查动词辨析。remove移动，搬开。句意为：你的桌子上堆满了太多不需要的东西，包括用过的试卷和书本。你最好拿走一些。remain保持，仍然是；resist抵抗，对抗；renew中止后继续，重新开始。

9．—Mum！Alice has broken my CD player!

—________After all，she couldn’t have done it on purpose.

A．What’s the matter? B．It doesn’t matter.

C．No trouble at all. D．How come?

解析：选B。考查交际用语。根据答语中“毕竟她不可能是故意的”，可知答案为选项B。It doesn’t matter.没关系。

10．On the way back home from the ball，she suddenly found her necklace________.

A．missed B．losing

C．gone D．be stolen

解析：选C。 find sth.gone/missing/lost发现某物丢失了。