| c【2Fwebcloud.vivo.com.cn%】 （本小题满分13分）
（1）证明：设等比数列{an}的公比是q0，则q0＞0，
且，解得，
∴Sn＝32−…（3分） | ∴＝ | (32−)(32−
2Fwebcloud.vivo.com.cn%（四）：Choice
1.I don’t know when he ___,but when he ___,
I’ll speak to him.
A.will come ,comes B.comes ,comes
C.comes,will come
D.will come ,will come
2.Steam can be seen _____from wet clothes.
rose B.raise C .to raise D.to rise
3.It will take a letter ____ Guangzhou.
A.sometime ,to reach
B.some time ,reaching
C.some time,to reach in
D.some time ,to reach
4._____ ,or you will miss the last bus.
A.Hurrying up B.To hurry up
C.Hurry up D.Hurried up
5.I suggest that the work _____next week.
A .be finished B.should finish
C.will be finished D.must be finished
6.Free medical treatment in this country
covers sickness of mind as well as____
sicknesses.
A.normal B.regular C.average D.ordinary
7.What do you think of the way ___ the
American live
A .which B./ C.on which D.how
8.Please take off your coat.It needs____
A.to wash B.washing
C.being washed D.wash
9.Pardon me .I didn’t mean to ____your
feeling.
A.wound B.hurt C.injure D.harm
10.We all find--------interesting ---------the Qin
Shihung Tome Museum.
A.that ,visit B.this ,to visit
C.it ,visiting D.it ,to visit
11.We were asked to write --------------
composition in an hour.
a 800-word B.a 800 words
C.an 800-word D.an 800-word’s
13.What the young woman said made him
feel _____.
A.well B.good C.fine D.perfectly
14.It was stupid _____ him to act like that
before the public.
A.for B.to C.about D.of
15.My new glasses cost me _____
the last pair that I bought.
A.three times B.three times as much as
C.three times more than
D.as much three times as
16.Debbie thought it difficult to find a hair
style _____her round face.
A.to fit B.to suit C.to match
D.to be suitable
17.The writer said this book ____a true story.
A.based B.was based
C.basing on D.was based on
18.I hurt my wrist yesterday ,so Doctor
White ____it X-rayed.
A.arranged me to get
B.arranged for me to getting
C.arranged me getting
D.arranged for me to get
19.The government has done everything they
can ____the water from _____.
A.stop ,polluted B.to stop ,polluting
C.stop ,being polluted
D.to stop ,being polluted
Choice
1.I don’t know when he ___,but when he ___,[A]
I’ll speak to him.
A.will come ,comes B.comes ,comes
C.comes,will come
D.will come ,will come
2.Steam can be seen _____from wet clothes.[D]
A.rose B.raise C .to raise D.to rise
3.It will take a letter ____ Guangzhou.[B]
A.sometime ,to reach
B.some time ,reaching
C.some time,to reach in
D.some time ,to reach
4._____ ,or you will miss the last bus.[C]
A.Hurrying up B.To hurry up
C.Hurry up D.Hurried up
5.I suggest that the work _____next week.[B]
A .be finished B.should finish
C.will be finished D.must be finished
6.Free medical treatment in this country
covers sickness of mind as well as____ [D]
sicknesses.
A.normal B.regular C.average D.ordinary
7.What do you think of the way ___ the [B]
American live
A .which B./ C.on which D.how
8.Please take off your coat.It needs____ [B]
A.to wash B.washing
C.being washed D.wash
9.Pardon me .I didn’t mean to ____your [B]
feeling.
A.wound B.hurt C.injure D.harm
10.We all find--------interesting ---------the Qin [D]
Shihung Tome Museum.
A.that ,visit B.this ,to visit
C.it ,visiting D.it ,to visit
11.We were asked to write -------------- [C]
composition in an hour.
a 800-word B.a 800 words
C.an 800-word D.an 800-word’s
13.What the young woman said made him [B]
feel _____.
A.well B.good C.fine D.perfectly
14.It was stupid _____ him to act like that [D]
before the public.
A.for B.to C.about D.of
15.My new glasses cost me _____ [B]
the last pair that I bought.
A.three times B.three times as much as
C.three times more than
D.as much three times as
16.Debbie thought it difficult to find a hair [A]
style _____her round face.
A.to fit B.to suit C.to match
D.to be suitable
17.The writer said this book ____a true story.[B]
A.based B.was based
C.basing on D.was based on
18.I hurt my wrist yesterday ,so Doctor [D]
White ____it X-rayed.
A.arranged me to get
B.arranged for me to getting
C.arranged me getting
D.arranged for me to get
19.The government has done everything they [C]
can ____the water from _____.
A.stop ,polluted B.to stop ,polluting
C.stop ,being polluted
D.to stop ,being polluted
2Fwebcloud.vivo.com.cn%（五）：点O是边长为2的正方形ABCD的对称中心,过点O作OM垂直ON,分别交正方形边于M、N、G、H则当OM、ON绕点O旋转时,图中的阴影部分是否关于点O为中心对称?这两部分的面积是否改变?请说明理由.
应该是中心对称,不改变,我就想问下过程怎么写?急需!坐等!各位大人拜托了!
因为角DOM+角COM=90度,且角CON+角COM=90度,所以角DOM=角CON.又因为OC=OD,角ODM=角OCN=45度,所以三角形DOM全等于三角形CON.（判定：ASA）所以三角形DOM的面积等于三角形CON的面积.所以四边形OMCN的面积=三角形COM的面...
2Fwebcloud.vivo.com.cn%（六）：如图,直线L：y=-½x+2与x轴、y轴分别交于A、B两点,在y轴上有一点C（0,4）,动点M从A点以每秒1个单位长的速度沿x轴向左运动.
（1）求A、B两点坐标；
（2）求△COM的面积S与M的移动时间t之间的函数关系式；
（3）当t为何值时△COM≌△AOB,并求此时M点的坐标.
（1）对于直线AB：y=-1/2+2
当x=0时,y=2；当y=0时,x=4 则A、B两点的坐标分别为A(4,0)、B(0,2)
（2）∵ C（0,4）、 A(4,0)
∴OC=4 OA=4 ∴OM=OA-AM=4-t
∴由直角三角形面积得S=OM×OC=(4-t)×4=-2t+8
（3)）当t=2秒时,△COM≌△AOB.
由△COM≌△AOB,可知OM=OB=2
∴AM=OA-OM=4-2=2
∴ 动点M从A点以每秒1个单位的速度沿x轴向左移动2个单位,所需要的时间是2秒钟；
此时M点的坐标是(2,0).
2Fwebcloud.vivo.com.cn%（七）：The original value of machine X is V dollors,while the original value of machine
Y is 2V dollars.Both machies depreciate in value at a constant rate of 10
percent of their origical value per year.Compare :A.The value of machine X
after 3 years B.The value of machine Y in 6 years
请问到底是哪种列法对,题目不是说每年的都应该降低“原始价格”的10%么,所以我觉得应该是这种列法：
A=V-0.1*V*3=0.7V,B=2V-0.1*2V*6=0.8V.
为什么大家都是 A：v(1-10%)^3 B:2v(1-10%)^6 列的,哪种对,
我觉得你不对,以为原文说的是at a constant rate of 10 percent,显然是按比例缩减.所谓original value就是上一年减完这一年还没减的原价.
这是我的观点.
2Fwebcloud.vivo.com.cn%（八）：如图，直线L：y＝−x+2【2Fwebcloud.vivo.com.cn%】（1）对于直线AB：y＝−x+2
当x=0时，y=2；当y=0时，x=4
则A、B两点的坐标分别为A（4，0）、B（0，2）；
（2）∵C（0，4），A（4，0）
∴OC=OA=4，
当0≤t≤4时，OM=OA-AM=4-t，S△OCM=×4×（4-t）=8-2t；
当t＞4时，OM=AM-OA=t-4，S△OCM=×4×（t-4）=2t-8；
（3）分为两种情况：①当M在OA上时，OB=OM=2，△COM≌△AOB．
∴AM=OA-OM=4-2=2
∴动点M从A点以每秒1个单位的速度沿x轴向左移动2个单位，所需要的时间是2秒钟；
M（2，0），
②当M在AO的延长线上时，OM=OB=2，
则M（-2，0），
即M点的坐标是（2，0）或（-2，0）．
2Fwebcloud.vivo.com.cn%（九）：2. Most people are ___________________ in our company. A. Spain B. Japan C. American D. China
Part I 单选题 （20%）
2. Most people are ___________________in our company.
A. Spain B. Japan C. American D. China
C
美国人
其他几个选项都是国家名称
百度教育团队【海纳百川团】为您解答
请点击“选为满意答案”按钮,
2Fwebcloud.vivo.com.cn%（十）：31.As a student of Chinese literature,she enjoys giving( ) of poems by her favourite poets.
A.recreations
B.recitations
C.repetitions
D.rehearsals
满分：2 分
32.He is not backward.It is just that he has not studied( ).
A.enough hard
B.hard enough
C.hardly enough
D.enough hardly
满分：2 分
33.It takes the repairman almost three hours ( )the washing machine.He advised us to buy a new one.
A.fix
B.to fix
C.fixing
D.fixed
满分：2 分
34.It"s Peter"s turn to( ) and wash up today.
A.clear away
B.clear up
C.set away
D.set up
满分：2 分
35.( )some recent work( )your older work and you’ll see how much you’ve improved
A.Get...out of
B.Involve...in
C.Put...into
D.Compare...with
满分：2 分
36.Mother saved every penny she could spare( ) for my schooling.
A.to pay
B.paying
C.to be paid
D.paid
满分：2 分
37.In the darkness,Mrs.Warren ( ) her way into the kitchen and switched on the light.
A.gripped
B.groped
C.guided
D.guarded
满分：2 分
38.A series of attempts having been made,he came to a successful solution( )the problem.
A.into
B.with
C.in
D.to
满分：2 分
39.
I"d like to keep a pet,( ) ,a dog .
A.
as usual
B.
for good
C.
for example
D.
forever
满分：2 分
40.( )these types of disadvantages,the States have passed laws controlling door-to-door selling.
A.Because of
B.Because
C.As
D.Despite
满分：2 分
41.It is ( )I do not want to go to the party,( )I am really too busy to afford the time.
A.not ...but
B.not that...but that
C.not only ...but also
D.both ...and
满分：2 分
42.Jane’s parents wouldn’t let her ( )with boys.
A.go out
B.going out
C.to go out
D.goes out
满分：2 分
43.Let’s start the meeting ( ) a chairman.
A.by electing
B.through electing
C.with electing
D.electing
满分：2 分
44.As we have been very busy recently,we go to the theatre only( )．
A.absolutely
B.frequently
C.continually
D.occasionally
满分：2 分
45.Management has granted(同意)a 10% pay rise in( )to union pressure.
A.response
B.research
C.preparation
D.purpose
满分：2 分
A
B
B
A
D
B
B
B
C
A
B
A
A
D
A
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x+2与x轴、y轴分别交于A、B两点，在y轴上有一点C（0，4），动点M从A点以每秒1个单位的速度沿x轴向左移动。
x+2与x轴、y轴分别交于A、B两点，在y轴上有一点C（0，4），动点M从A点以每秒1个单位的速度沿x轴向左移动。
