1+3=4 1+3+5=9 1+3+5+7=16.1+3+5+.+19=(　) 1＋3＋5＋.＋33＋35＝(　　　)

1 is well in
2 don't think the same
3look the same

解题思路：

粉笔盒放置在讲台上，受到讲台给的向上的支持力，使得粉笔盒发生向上的形变，要恢复形变，所以产生一个向下的力，即对讲台产生一个向下的压力，A正确；

A

（1）C　（2）B　（3）A　（4）B

C

反问句能使感情更浓烈、语气更强烈
故选C

1．④　2．③　3．②　4．①

C

3时40分=3
2
3 时；
2.8平方千米=280公顷．
故答案为：3
2
3 ，280．

问题（严重）形式（严峻）要求（严格）（严厉）打击（严格）把关

B D

8,2,（2分之1）,8分之1,32分之1 .
7分之6,7分之2,21分之2,（63分之2）,189分之2,（567分之2）.

1．C　2．A　3．C　4．A

B

甲鱼属于爬行动物，章鱼属于软体动物，鲸属于哺乳动物，只有鲨鱼属于鱼类。

你好!
右图中两个图形的周长（　D：一样长　　）.
你仔细观察1图和2图,它们都有长方形的一条长和一条宽,和里面的两条线.故周长相等.
祝你学习进步,望采纳,谢谢!O(∩_∩)O~

蚯蚓的生活习性为（昼伏夜出,穴居）,以土壤中的（有机物）为食,蚯蚓身体（同许多体节构成）可以使躯体运动灵活

4个十和5个一组成的数写作(　45　),这个数是(　　二　)位数

第一个空（1/4）
第二个空（3/4）
支持支持! 支持支持! 支持支持!

对于这个题目,第一是B,第二是D

1．一棵　2．一把　3．一片　4．一件

B

编箩筐　吹笛子　画风筝　修篱笆

解题思路：①先计算方程的左边，然后方程的两边同时除以4即可得到未知数的值．
②方程的两边同时加上x，然后方程的两边同时减去0.5即可得到未知数的值．
③方程的两边同时乘以[3/5]即可得到未知数的值．

①x+3x=24　
4x=24
4x÷4=24÷4
x=6
　　 　
②44-x=[1/2]　　
44-x+x=0.5+x
44-0.5=0.5+x-0.5
x=43.5
　
③[5/3]x=6
[5/3]x×[3/5]=6×[3/5]
x=3.6

点评：
本题考点： 方程的解和解方程．

考点点评： 本题运用等式的基本性质进行计算即可，注意等于号对齐．

A　

两个“以”都是连词，连接前后的动词短语，表示目的；A项一个“之”是结构助词“的”，另一个“之”是结构助词，起取消句子独立性作用；B项一个“其”是代词，指代吴、楚七国，另一个“其”，是副词，表示推断语气；C项一个“且”是而且、况且，另一个“且”是尚且的意思。

答案选D有条公式hv（光照能量）=E（产生的光子能量）+W（材料最大逸出工）

文字游戏还是选B
题目中明确写了选B,A和B是什么不重要
题目：“已知该题选B”,那就选B了,A和B具体是什么不重要
懂不?

（Which ）（　subject　　）（　do　　）you（　　like　　）（　　best　）?

【近义词】：进退两难
【反义词】：进退自如

A


无

宝贵的遗产　古老的赵州桥　　　悠闲地散步　完整地保存
宝贵的经验　世界闻名的赵州桥　悠闲地喝茶　细心地保存

C    

解题思路：把32平方米换算成公顷数，用32除以进率10000得0.0032公顷；
把4.06吨换算成复名数，整数部分就是4吨，把小数部分0.06吨换算成千克数，用0.06乘进率1000得60千克；
把50克换算成千克数，用50除以进率1000得0.05千克；
把305平方米换算成平方分米数，用305乘进率100得30500平方分米．

32平方米=0.0032公顷　　　
4.06吨=4吨60千克
50克=0.05千克　　　　　 305平方米=30500平方分米．故答案为：0.0032，4，60，0.05，30500．

点评：
本题考点： 面积单位间的进率及单位换算；质量的单位换算．

考点点评： 此题考查名数的换算，把高级单位的名数换算成低级单位的名数，就乘单位间的进率；反之，就除以单位间的进率．

17.C 18.C 19.B 20.D 21.A 22.C

小题:（1）这样写是形象表明“我”不愿相信母亲已经死去，尽管“我”来时原来是知道的。（此题答案比较明显也比较唯一，因此答其它意思不能得分，比如像“对母亲的爱”之类）
（2）加上这样的形容词表明了工人师傅的态度，因为这种情景他们见得太多了，从而说明生命的结束是必然的，没有什么好奇怪的，为下面写生命做了铺垫。（此题答了工人师傅的心态得2分，答了与下文的关系得1分）
小题:（1）这个比喻所包含的意思是：生命的丧失是挡不住的。
（2）这个比喻所包含的意思是：每个人的生命有多长，自己生前是无法预测的。
小题:（1）他们错误地认为生命是无限的，而不知道生命的短暂。
（2）老年人就该做老年人的事，非要去返老还童，是不对的。
小题:青年阶段：既要开拓进取，也要珍惜生命。中年阶段：要稳定，不要夸张生命。老年阶段：要善待自己，自得其乐

无

夏威夷在北半球,夏威夷高压强大说明副热带高气压带,气压带南移,太阳直射南半球.
远日点公转慢A错,B温带白昼不可能比热带长,错.C正确.D南亚是信风带,吹东南方
看完了好评我哦~~

A．一帆风顺
B．袖手旁观
C．一蹴而就
D．事在人为

∑(k=1,∞)P(X=k)=1
所以
∑(k=1,∞)Aλ^k=1
也就是
A∑(k=1,∞)λ^k=1
Aλ/(1-λ)=1
A=(1-λ)/λ
这里化简需要|λ|0 所以A>0 λ>0
所以0

孜孜　汲　坚

舒服　难受　精致　粗糙

1.定语从句：定语从句是由关系代词或关系副词引导的从句,其作用是作定语修饰主句的某个名词性成 分,一般紧跟在它所修饰的先行词后面.
2、关系词：引导定语从句的关联词称为关系词,关系词有关系代词和关系副词.关系代词有that, which, who, whom, whose, as等；关系副词有where, when, why等.
关系词有三个作用：1、引导定语从句;2、代替先行词；3、在定语从句中担当一个成分.
3、先行词：被定语从句修饰、限定的词或短语,称为先行词.
4、定语从句分为限定性定语从句和非限定性定语从句.
一、x09限定性定语从句
　（一、）关系代词引导的定语从句
1. who指人在从句中做主语
(1) The boys who are playing football are from Class One.
(2) Yesterday I helped an old man who had lost his way.
2. whom指人,在定语从句中充当宾语,常可省略.
(1) Mr. Liu is the person (whom) you talked about on the bus.
(2) Mr. Ling is just the man whom I want to see.
注意：关系代词whom在口语和非正式语体中常用who代替,可省略.
(3) The man who/whom you met just now is my friend.
• 3. which指物在定语从句中做宾语时可省略
• (1) Football is a game which is liked by most boys.
• (2) This is the pen (which) he bought yesterday.
4. that既可代表事物也可代表人.
关系代词在从句中作主语时不能省略,而当关系代词在从句中作宾语或表语时,常常省略.
特别提示：
1．关系代词做从句的主语时,从句谓语动词的人称和数要与先行词保持一致.
2．如果which在从句中作“不及物动词＋介词”的介词的宾语,注意介词不要丢掉,而且介词常放在关系代词which的前边,但有的则放在它原来的位置.
3. that 的妙用：（只能用that的情况） that用法需补充
（1）x09当先行词是anything, everything, nothing , none等不定代词时；
（2）x09当先行词由every, any, all, some, no, little, few, much等修饰时等,这时的that 常省略；
（3）x09当先行词前有序数词或形容词最高级修饰时；
（4）x09当先行词是序数词或最高级时；
（5）x09当先行词中既有人又有物时；
（6）x09当先行词前有the only / the same / the very / the last 修饰时；
（7）x09当前句中已有which :
　5. whose通常指人,也可指物,在定语从句中做定语
　　 eg. He has a friend whose father is a doctor.
　 whose指物时,常用以下结构来代替：
　　 eg. (1). The classroom whose door is broken will soon be repaired.
　　 The classroom the door of which is broken will soon be repaired.
　　 (2) Do you like the book whose color is yellow?
　　 Do you like the book the color of which is yellow?
（二、）关系副词
　　关系副词=介词+关系代词
why=for which where=in which when=during which whose=of which
1. where是关系副词,用来表示地点的定语从句
2. when引导定语从句表示时间
3. whose是关系代词,修饰名词作定语,相当于所修饰成分的前置所有格.它引导的从句可以修饰人和物,当它引导的从句修饰物体时,可以与 of which 调换,表达的意思一样.
关系副词引导的定语从句：
　　1. when指时间,在定语从句中做时间状语
　　 eg. I still remember the day when I first came to the school.
　　2. where指地点,在定语从句中做地点状语
　　 eg. Shanghai is the city where I was born.
　　3. why指原因,在定语从句中做原因状语
　　 eg. Please tell me the reason why you are late.
　　注意：关系副词引导的从句可以由“介词+关系代词”引导的从句替换
(1) The reason why/ for which he refused the invitation is not clear,
(2) From the year when/in which he was going to school he began to know what he wanted when he grew up.
(3) Great changes have taken place in the city in which./where I was born.
判断关系代词与关系副词：
　　方法一： 用关系代词,还是关系副词完全取决于从句中的谓语动词.不及物动词后面无宾语,就必须要求用关系副词或者是介词加关系代词；而及物动词后接宾语,则要求用关系代词.例如：　
　　This is the mountain village where I stayed last year.　
　　I'll never forget the days when I worked together with you.　
　　（错） This is the mountain village where I visited last year.　
　　（错） I will never forget the days when I spent in the countryside.　
　　（对） This is the mountain village (which) I visited last year.　
　　（对） I'll never forget the days (which) I spent in the countryside.　
习惯上总把表地点或时间的名词与关系副词 where, when联系在一起.此两题错在关系词的误用上.
　　方法二： 准确判断先行词在定语从句中的成分(主、谓、宾、定、状),也能正确选择出关系代词/关系副词.
例1. Is this museum ___ you visited a few days ago?　
　 　A. where　B. that　C. on which
　　例2. Is this the museum ____ the exhibition was held?
A. where　B. that　C. on which
关系词的选择依据在从句中所做的成分,○1先行词在从句中做主、定、宾语时,选择关系代词 (who, whom, that, which, whose)；○2 先行词在从句中做状语时,应选择关系副词 ( where 地点状语,when 时间状语,why 原因状语) .
Exercises:
1. The man ____ is standing there is my father.
A. who B. whom C. which
2. Who was the man _____ spoke to you just now?
A. who B. whom C. that
3. Tom is the only person I can depend on.
A. that B. which C. who
4. It is the best film ____ she has ever seen.
A. that B. which C. when
5. Beijing is the 29th city ____ holds the Olympic Games.
A. where B. that C. which D. what
6. The football match ____ I watched yesterday is fantastic!
A. when B. that C. what D. who
7. China is a country has a long history.
A. who B. which C. where
8. The boy ___ I talked with just now is my best friend.
A. who B. which C. where
9. — The duty of Project Hope is to help poor children, isn’t it?
— Yes, it has built many schools __ those children can study happily.
A. where B. when C. which
10. We know Jackie Chan ___ movies are very popular with the young.
A. whose B. that C. who D. which
非限定性定语从句 ：
　　非限定性定语从句的作用是对所修饰的成分作进一步说明,通常是引导词和先行词之间用逗号隔开,将从句拿掉后其他部分仍可成立.在非限定性定语从句中,不能用关系副词why和关系代词that,而用who, whom代表人,用which,whose代表事物.
限定性定语从句 & 非限定性定语从句 区别：
限制性定语从句 非限制性定语从句
不用逗号和主句隔开 用逗号和主句隔开
是先行词不可缺少的定语,不能删除 是对先行词的补充说明,删除后意思仍完整
翻译成先行词的定语, “…的…” 通常翻译成主句的并列句
关系词做宾语时可省略 关系词不可省略
关系词可用that；可用who代替whom 关系词不用that；不用who代替whom
可以用关系副词why表原因 不能用关系副词why,需用for which 代替
定语从句可以简化成短语.
① 定语从句为被动结构,可用过去分词短语简化.
e.g. I bought a book that was written by Lu Xun. → I bought a book written by Lu Xun.
我买了一本鲁迅写的书.
② 若为主动结构,且为进行时态或从句表示经常性的动作和状态时,可用现在分词短语简化.
e.g. Tell the children who are playing there not to do that. → Tell the children playing there not to do that.
The house that stands at the corner was built in 1987. → The house standing at the corner was built in 1987.
③ 当从句中的谓语动词表示一个将要发生的动作或具有某种情态意义时,可简化为动词不定式.
e.g. We have nothing that we should fear. → We have nothing to fear. 我们没有什么事情可以害怕.
④ 当从句的谓语动词后是介词短语时,可简化为介词短语作定语.
e.g. The book that is on the table is expensive. → The book on the table is expensive.
7.关系副词when或where引导定语从句时,它们在从句中分别作时间状语和地点状语.如：This is the room where they had a quarrel a week ago. (这是一个星期前他们吵架的房间.) / I can never forget the day when I first saw you. (我永远不会忘记第一次见到你的日子.)

[注意]
一、定语从句是复合句的重要组成部分.在定语从句中不管出现什么情况,主句的结构必须完整.试比较：
1. Is this farm ________ they visited the day before yesterday?
2. Is this the farm ________ they visited the day before yesterday?
A. which B. the one C. where D. what
简析：第1题中主句缺少表语,只有B项才能保持主句的完整性.故选B.第2 题的主句本身已完整,应填关系代词作定语从句中及物动词visit 的宾语.所以,正确答案是A.
二、在定语从句中,关系代词或关系副词已经代替先行词在定语从句中充当了某一成分,因此,定语从句中不能再出现与关系代词或关系副词相重叠的成分.例如：
改错： Do you remember the book that I lent it to you last week?
简析：该题中的that 指代先行词book,在定语从句中充当了动词 lend 的逻辑宾语,故 it 应该删除.
三、解题时,首先要结合选项对题干进行整体感知,确定定语从句的位置；根据定语从句中所缺少的句子成分,分析先行词逻辑上在定语从句中的成分,继而选出正确的选项.例如：
Can you tell me the name of the factory ________ you visited last week?
A. what B. where C. / D. when
简析：本题定语从句的主语、谓语、时间状语已具备,而visit 是个及物动词,从语义上分析,factory 作visit 的宾语.故只能选C (引导词在定语从句中作宾语时可以省略）.
四、解答"介词+关系代词 "类型的定语从句题时,关键在于分析定语从句中的谓语动词（该动词是不及物动词）习惯上常与什么介词搭配使用.这就需要同学们在平时学习时要注重某些不及物动词和介词惯用的情形,并要灵活运用.例如：
In the dark street, there wasn't a single person ___D_____ she could turn for help.
A. that B. who C. from whom D. to whom
简析:本题定语从句中的turn 与介词 to 构成固定短语"turn to sb. for help (向某人求助）".
Exercise :
1.Watch the girl and her dog ________ are crossing the bridge.
A. which B. who C. they D. that
2.Who________know him would believe him?
A. whom B .that C. which D. who
3.Which of the two cows_____ you keep produces more milk?
A. that B. which C. whom D. what
4.His parents wouldn’t let him marry anyone___ family was poor.
A. of whom B. whom C. of whose D. whose
5.A child _____ parents are dead is called an orphan.
A. which B. his C. whose D. of whose
6.The building ____ windows are bright at night is our school library.
A. that B. which C. whose D. of whose
7.I have heard from my father,______ is in America .
A. which B. that C. whom D. who
8.There is a mountain ___ the top is always covered with snow.
A. of that B. of which C. its D. that
9.I will hire the man ____ they say is a good English speaker.
A.who B. that C which D. whom
10.On the way I saw a student ____ I thought was your brother.
A.whom B. who C. that D. he
11.I can still remember the sitting-room _____ my mother and I used to sit in the evening.
A.what B. which C. that D. where
12.I know the place ____ we can have a quiet talk.
A.which B. where C. wherever D. it
13.Nature,_____ gives supplies of food to every creature, is great.
A. who B. that C. whose D.it
14.Would you please put the box ___ it belongs
A.to whom B. to which C into which D. where
15.You may take ____ book you like.
A.which B. only C. whichever D.what
16.China is the birth place of kites,-___ kite flying spread to Japan, Korea, Thailand and India.
A.from that B.from here C. from there D.from which
17.He has to work on Sundays,____ he does not like.
A. and which B.which C. and when D.when
18. Is this museum ___ some German friends visited the day before yesterday.
A.Which B.that C.where D.the one
19.John was the only one __ I had visited.
A.which B. that C.whom D.who
20The doctor will speak to ___ comes in first
A.whoever B.whomever C.whichever D.whatever
21.Choose ___ you think is good .
s:A.Which B.that C.whom D.what
22.I gave him a warning,____ he turned a deaf ear.
A. of which B. for which C.to that D. to which
23.This dictionary, the few pages_____ are missing,is of fno use.
A.among which B.of which C.in which D.to which
24.Give this prize to _____ composition is thought excellent.
A.whoever B. whosever C. whomever D.whatever
25.This is a very boy____ parents were killed in the war.
A.who B. that C. whose D whom
26.She is one of the few girls who______ passed the examination.
A.was B. were C. has D. have
27.The teacher _______ is at that desk over there.
A.you should talk to B. you are talked to
C. whom you are talking D. whom you are talked to
28.In the dark street, there was not a single person_____she could turn for help.
A.that B. who C. from whom D. to whom
29.Who______ has common sense can believe such a superstition(
A.who B. which C. but D. that
30That is the town ______ he was born.
A.which B. where C. when D. why..
31That is the town ______ he was born.
A.which B. where C. when D. why

B

1．俯视　2．注视　3．凝视

胖乎乎　红通通　绿油油　雾沉沉
乐悠悠　喜滋滋　黑乎乎　雨蒙蒙

1．窃窃私语
2．自言自语
3．强烈
4．激烈
5．猛烈

/>#include"stdio.h"
main()
{
int j,i,k=0;
for(j=6;j<1001;j++)
{
for(i=1;i<=j/2;i++)if(j%i==0)k+=i;
if(j==k)
{
printf("%4d its factors are ",k);
for(i=1;i<=j/2;i++)
if(j%i==0)printf("%d,",i);printf("b n");
}
k=0;
}
getch()();
}

CCBBC,ACBDC,CDDAD

从原方程组的1,2两个方程中,选择系数（ 较小 ）的方程变形,用（ 一个未知数 ）表示另一个未知数,得到方程3.
第二步：吧（　方程3　　　）代人另一个方程,消去一个未知数,得到一个（　一元一次　　　）
第三步：解（　　一元一次方程　　　）,求出其中的未知数值.
第四步：把第3步求出的值代人（　方程1　　）,求出另一个未知数的值,从而得到原方程的解.

1、一个数保留两位小数的近似数是4.10,这个数的准确值应在（4.104 ）和（　4.095　　）之间.

2欧姆

N2键能最大不解释,主要问题是F2、Cl2、Br2的键能比较
在正常情况下,结构相同的同系列物质分子,从上到下键长增长,键能减弱.但F2是个特殊情况,键能反常的小,这三者的键能关系是E(Cl2)>E(Br2)>E(F2).这是特例,记住即可.F有2个特例,1个是上述键能的反常,另1个是F电子亲和能小于Cl.关于这两个特例,有理论解释,但是比较牵强,直接记住结论就好.
总之,本题答案是A
附：键能数据
x09E(kJ/mol)
F2x09157
Cl2x09243
Br2x09194
I2x09153