一.选择题(本大题共8小题.每小题2分,共16分).
1.\(\sqrt {121} \)的平方根是( ).
A.\( – 11\)
B.11
C.\(\sqrt {11} \)
D.\( \pm 11\)
2.若\(\sqrt[3]{m} = – 3\),\(\sqrt n = 2\),则n− m的值是( ).
A.\( – 31\)
B.31
C.\(\sqrt 2 – \sqrt[3]{3}\)
D.\(\sqrt 2 + \sqrt[3]{3}\)
一.选择题(本大题共8小题.每小题2分,共16分).
1.\(\sqrt {121} \)的平方根是( ).
A.\( – 11\)
B.11
C.\(\sqrt {11} \)
D.\( \pm 11\)
2.若\(\sqrt[3]{m} = – 3\),\(\sqrt n = 2\),则n− m的值是( ).
A.\( – 31\)
B.31
C.\(\sqrt 2 – \sqrt[3]{3}\)
D.\(\sqrt 2 + \sqrt[3]{3}\)
一.选择题(本大题共8小题.每小题2分,共16分).
1.下列语句正确的是( ).
A.64的平方根是 ,记作\( \pm \sqrt {64} = \pm 8\)
B.因为\({\left( { – 1} \right)^2} = 1\),所以1的平方根是\( – 1\)
B.\( – \sqrt 3 \)表示3 的算式平方根的相反数
D.0.9的算式平方根是0.3
2.下列说法或计算:①64的立方根是\( \pm 4\);② \(\sqrt[3]{{{x^3}}} = x\);③\(\sqrt {64} \)的立方根是2;④\(\sqrt[3]{{{{( \pm 8)}^3}}} = \pm 4\),其中正确的有( ).
A.1个
B.2个
C.3个
D.4个
一.填空.(每题2分,共计14分)
1.已知方程\(\left( {m + 1} \right){x^{\left| m \right|}} + 3 = 0\)是关于x的一元一次方程,则m的值是 .
2.方程\(\frac{x}{2} + \frac{m}{3} = x – 4\)与方程\(\frac{{x – 6}}{2} = – 6\)的解相同,则m= .
1.如图所示,当开关\({S_1}\)和\({S_2}\)闭合,\({S_2}\)断开时,灯\({L_1}\)和\({L_2}\)是 联;当开关\({S_2}\)闭合,\({S_1}\)、\({S_3}\)断开时,灯\({L_1}\)和\({L_2}\)是 联;当开关\({S_1}\)、\({S_2}\)都闭合时,电路将 .
(第1题)
2.如图a所示,灯泡\({L_1}\)和\({L_2}\)并联,由图b所示,电流表\({A_1}\)选用的量程是 A,示数是 A;电流表\({A_2}\)选用的量程为 A,示数为 A.
(第2题)
一.选择题(本大题共8小题.每小题2分,共16分).
1.若方程\(\frac{k}{x} = x + 1\)的解 满足2<\({x_0}\)<3,则k可能是( ).
A.3
B.6
C.11
D.12
2.给出下列4个多项式:①\({y^2} – y + \frac{1}{4}\),②\(9{m^2} – 6mn + {n^2}\),③\(100{x^2} – 1\),④\( – 25{a^2} – {\left( { – 2b} \right)^2}\). 其中,能用公式法因式分解的有( ).
A.1个
B.2个
C.3个
D.4个
一.选择题(本大题共8小题.每小题2分,共16分).
1.下列各组中,不是同类项的是( ).
A.0和4
B.\(3\pi {R^2}\)与\({\pi ^2}{R^2}\)
C.\({x^3}{y^4}\)与\({x^3}{z^4}\)
D. \( – {x^{n + 3}}{y^{n – 3}}\)与\(2{y^{n – 3}}{x^{n + 3}}\)
2.估计\(\frac{{\sqrt 7 – 1}}{2}\)介于( ).
A.0.5与0.6之间
B.0.6与0.7之间
C.0.7与0.8之间
D.0.8与0.9之间
一.选择题(本大题共8小题.每小题2分,共16分).
1.计算\({3^ – }^2\)的倒数的结果是 ( ).
A.\( – 9\)
B.9
C.\( – \frac{1}{9}\)
D.\(\frac{1}{9}\)
2.已知一组数据−2,−1,0,1,2,则这组数据的平均数与中位数的差为( ).
A. −1
B.0
C.1
D.−2
1、如图所示,直线 \(y = \frac{1}{2}x\)与双曲线 \(y = \frac{k}{x}\)(k>0,x>0)交于点A,将直线 \(y = \frac{1}{2}x\) 向上平移4个单位长度后,与y轴交于点C,与双曲线 \(y = \frac{k}{x}\)(k>0,x>0)交于点B,若OA=3BC,则k的值为( ).
A.3
B.6
C.\(\frac{9}{4}\)
D. \(\frac{9}{2}\)
(第1题)
1、如图所示,直线 \(y = \frac{1}{2}x\)与双曲线 \(y = \frac{k}{x}\)(k>0,x>0)交于点A,将直线 \(y = \frac{1}{2}x\) 向上平移4个单位长度后,与y轴交于点C,与双曲线 \(y = \frac{k}{x}\)(k>0,x>0)交于点B,若OA=3BC,则k的值为( ).
A.3
B.6
C.\(\frac{9}{4}\)
D. \(\frac{9}{2}\)
(第1题)
一、选择题。
1、式子\(\frac{1}{{\sqrt {x – 1} }}\)在实数范围内有意义,则x的取值范围是( )
A.x<1
B.x≤1
C.x>1
D.x≥1
2、已知,则 \(\sqrt {{{\rm{x}}^2} – 8x + 16}= 4 – x\)的取值范围是( )
A.为任意实数
B.0≤x≤4
C.x>4
D.x≤4
( ) 1.(2015•南京)— Why didn’t Peter his homework?
—He said he had lost his workbook. I think it’s an excuse.
A. does
B. doing
C.do
D. did
( ) 2. (2014•济南) Mr Cooper is tired do anything this morning.
A. so; that
B. too; to
C. both; and
D. so; as
( ) 1. (2016•盐城)—Is that man Mr Green?
—It be him. He has gone to Paris on business.
A. may
B. must
C. can’t
D. shouldn’t
( ) 2. (2016•南通) They went climbing the morning of May I and came back the afternoon.
A. on; on
B. in; in
C. on; in
D. in; on
( ) 1. (2016•菏泽) —Did you have good time yesterday?
—Yeah, I really had fun at the party!
A. a; /
B. a; the
C. /; the
( ) 2. (2016•淮安) Lily often helps her mother do some cooking in the .
A. kitchen
B. garden
C. bathroom
D. bedroom
( ) 1. (2016•铜仁) —Do you know the children over there?
—Yes. names are Mike and Jane.
A. Theirs
B. Their
C. Her
D. His
( ) 2. (2016•绥化) I have friends,so I feel sad.
A. few
B. a few
C. little
( ) 1. (2016•重庆A) It’s sports time. Most students in Class 1 are playing football on the playground.
A. boy
B. boys
C. boy’s
( ) 2. (2014•天津) — you ever the new Minyuan Stadium?
—No, I haven’t.
A. Do; visit
B. Have; visited
C. Did; visit
D. Are; visiting
1. They have known each other for a long time.
they each other?
2. I know Zhouzhuang very well because I have lived there for ten years.
you know Zhouzhuang very well?
第一部分 选择题
1.(2016•丽水•10)如图,已知⊙O是等腰Rt△ABC的外接圆,点D是 上一点,BD交AC于点E,若BC=4,AD=\(\frac{4}{5}\),则AE的长是( )
第一部分 用括号中所给词的适当形式填空
1. My teacher told me that light (travel) much faster than sound.
2. Please tell John how to turn on the computer (one).
第一部分 用括号中所给词的适当形式填空
1. When I got home, my father (help) my mother with the cooking.
2. I have decided to write a (complain) letter for my broken bike.
第一部分 用括号中所给词的适当形式填空
1. The boy was excited to see all types of (aircraft) at the air show.
2. The thief happened (see) by a policeman while stealing a wallet.
第一部分 用括号中所给词的适当形式填空
1. Pardon? I (think) about a difficult problem just now.
2. My grandpa (use) live in a small village. 继续阅读 九年级下册 英语第一单元 Asia 高频率易错题(含答案)
课文目录
1、我们爱你啊,中国
第一部分 根据句意和汉语或首写字母提示完成单词
1. We have got a cold because the temperature (下降)a lot several days ago.
2. You were short of hands at (收获)time. 继续阅读 八年级上册 英语第七单元 Seasons 高频率易错题(含答案)
第一部分 根据句意和汉语或首写字母提示完成单词
1. It rained so (大) this morning that the lake is full of water now.
2. People who have no sense of (方向)often get lost in big cities. 继续阅读 八年级上册 英语第八单元 Natural disasters 高频率易错题(含答案)
第一部分 根据句意和汉语或首写字母提示完成单词
1. They were discussing the problems of Western s .
2. Daniel, shall we (get ready)food and drink for the welcome party now? 继续阅读 八年级上册 英语第六单元 Birdwatching 高频率易错题(含答案)
第一单元 第1课 《我们爱你啊,中国》
bì bō
( )
shǒu pà
( )
wēi é
第一单元 第1课 让我们荡起双桨
bō lànɡ
( )
qīnɡ qīnɡ
( )
piāo dànɡ
第一单元 第1课 师恩难忘
lǎo lɑo
( )
chuī yān
( )
xiē jiǎo
( )
niàn dɑo
第一单元 第1课 老师,您好!
biān zhī
( )
chónɡ ɡāo
( )
jìn tòu
( )
xiànɡ mù
第一部分 用括号中所给词的适当形式填空
1. He needs to do more (exercise) to keep fit,I think.
2. It was (bore)to sit there without doing anything. 继续阅读 八年级上册 英语第三单元 A day out 高频率易错题(含答案)
第一部分 用括号中所给词的适当形式填空
1. You need less money and (few) people to do the work.
2. The Chinese lesson is very (interest) and we all like it.
3. During the (read)Week,we can read all kinds of story books. 继续阅读 八年级上册 英语第二单元 School life 高频率易错题(含答案)
第一部分 用括号中所给词的适当形式填空
1. The more trees we plant,the (beautiful)our city will be.
2. Tom is very humorous. He often tells us (fun)stories. 继续阅读 八年级上册 英语第一单元 Friends 高频率易错题(含答案)
第一部分 用括号中所给词的适当形式填空
1. Who will you (invite) to your birthday party next Friday?
2. His father is a good (cook); he can cook nice meals.
3. Some of my classmates enjoy (talk) about basketball matches after class.
第一部分 用括号中所给动词的适当形式填空
1. Fires (burn) all over the town now.
2. —What are the students doing over there?
—They are talking about different ways of (spend) the holiday.
3. They are twins. I can’t tell the (different) between them.
第一部分 用括号中所给词的适当形式填空
1. Jim spends 10 dollars (buy)the Book.
2. I’ll ask him (show)you around his school.
3. There are lots of flowers (smell)in Sunshine Town.
第一部分 用括号中所给词的适当形式填空
1. I really love the song because it sounds (wonder).
2. I think we will have a (wonder)time there.
3. Hobo is (search) the cupboard for his food.
第一单元Dream homes
1. —Thank you for invite me to your party.
—You’re welcome.
2. Would you like to share the book with I?
3. We have more then enough books to read this summer holiday.
第一单元 第1课 《我们爱你啊,中国》
bì bō
( )
shǒu pà
( )
wēi é
( )
qì pò
( )
第一部分 用括号中所给词的适当形式填空
1. You can have lots of (fun) here.
2. Thanks very much for (bring) me my English book.
3. May is (five) month of the year.
1. 在公共汽车上,我们应该给有需要的人让座位。
We should people on the bus.
2. 他有些有趣的事情要告诉汤姆。
He has Tom.
第一部分 用括号中所给动词的适当形式填空
1. —What does your dog (like)? —It hates brushing its fur.
2. My mother is (busy) of all.
3. How to take good (careful) of my parrot is a problem.
1. 昨天我在树丛里发现了一只老鼠。
______ I found a mouse ______ ______ ______ .
2. 他正在去上学的路上。
He is ______ ______ ______ ______ school.
一、小小辨音题。(相同的读音用“T”表示,不相同的读音用“F”表示)
( ) 1. street three
一、英汉互译。
1. 在汽车站 ____________
2. 乘坐小汽车 ____________
一、短语翻译。
1. 起床早 ____________
2. 喝太多的果汁 ____________
一、短语翻译。
1. 喝水 ____________
2. 甜食 ____________
1、若\(\left( {m + 58} \right)2 = 654483\),则\(\left( {m + 48} \right)\left( {m + 68} \right) = \) .
2、\({\left( { – 2{a^2}} \right)^3} \times {\left( { – a} \right)^2} \div {\left( { – 4{a^4}} \right)^2} = \) .
3、已知\({a^{3m}} = 3\),\({a^n} = 9\),则\({a^{3m – n}} = \) .
1、如果\({x^2} + 2ax – 16 = \left( {x + 4} \right)\left( {x – 4} \right)\),那么\(a = \) .
2、等腰三角形的两边长分别为\(3cm\)、\(4cm\),则该三角形的周长是 .
1、一个多边形的内角和是\(900^\circ \),这个多边形的边数是( )
A、10
B、9
C、8
D、7
1、直接写出计算结果:\(100 \times {10^{ – 2}} = \) ;\({a^3} \cdot {\left( { – 2a{b^2}} \right)^3} = \) .
2、计算:\(a\left( {1 – a} \right) + {\left( {a + 1} \right)^2} – 1 = \) .
1、下列各多项式中,能用完全平方公式分解因式的是 ( ).
(A)\({a^2} – 2ab + 2{b^2}\)
(B)\({a^2} – 2ab + 4{b^2}\)
(C)\(1 + {m^2}{n^2} – 2mn\)
(D)\({x^2} + {y^2} + xy\)
1、下列分解因式,正确的是( ).
A、\( – a + {a^3} = – a\left( {1 + {a^2}} \right)\)
B、\(2a – 4b + 2 = 2\left( {a – 2b} \right)\)
C、\({a^2} – 4 = {\left( {a – 2} \right)^2}\)
D、\( – {a^2} + 2a – 1 = – {\left( {a – 1} \right)^2}\)
1、\({\left( { – {x^{k – 1}}} \right)^2}\)等于( ).
A.\( – {x^{2k – 1}}\)
B.\( – {x^{2k – 2}}\)
C.\({x^{2k – 2}}\)
D.\({x^{2k – 1}}\)
1、杜绝“餐桌浪费”,刻不容缓.据统计全国每年浪费食物总量约500亿kg,这个数据用科学记数法表示为 ( )
(A)\(0.5 \times {10^{11}}kg\)
(B)\(50 \times {10^9}kg\)
(C)\(5 \times {10^9}kg\)
(D)\(5 \times {10^{10}}kg\)
一、填空。(第一小题4分,其余小题每格1分,合计31分)
1、
chuàn
□÷□=□(串)……□(个)
□÷□=□(个)……□(个)
一、看拼音写字。(20分)
hán qì
huǒ hóng
一、选择题(每题2分,共22分)
1、在下列图形中,由\(\angle 1 = \angle 2\)一定能得到\(AB\parallel CD\)的是( ).
A、
B、
C、
D、
一、选择题(每题2分,共22分)
1、\({\left( { – {x^{k – 1}}} \right)^2}\)等于( ).
A、\( – {x^{2k – 2}}\)
B、\( – {x^{2k – 1}}\)
C、\({x^{2k – 2}}\)
D、\({x^{2k – 1}}\)
一、选择题(每题2分,共22分)
1、下列多项式乘法中能用完全平方公式计算的是( ).
A、\(\left( {a + 2} \right)\left( {2 – a} \right)\)
B、\(\left( {a + 1} \right)\left( {a + 2} \right)\)
C、\(\left( {a – b} \right)\left( { – a + b} \right)\)
D、\(\left( {a – b} \right)\left( { – a – b} \right)\)
一、选择题(每题3分,共24分)
1、已知\(\left\{ {\begin{array}{*{20}{c}} {m + 2n = 180}\\ {m = n + 15} \end{array}} \right.\),则\(m + n\)等于( ).
A、3
B、\(\frac{8}{3}\)
C、 2
D、1
一、选择题(每题3分,共30分)
1、由于小桐将作业纸上算式不小心撒上了墨水,如图所示,(图已经隐身 下载后出现原图), 请你找出的正确数字是( ).
A、\({2^{n + 1}}\)
B、\({2^{n + 2}}\)
C、\({2^{n + 3}}\)
D、\({2^{n + 4}}\)
一、选择题(每题2分,共20分)
1、如图,能判断AB∥CD的条件是( ).
A、\(\angle 3 = \angle 4\)
B、\(\angle D = \angle DCE\)
C、\(\angle D + \angle DCB = {180^ \circ }\)
D、\(\angle 1 = \angle 2\)
(第1题 图已经隐身 下载后出现原图)
一、选择题(每题2分,共20分)
1、下列计算中正确的是( ).
A、\(m \cdot {m^2} = {m^2}\)
B、\({m^2} + {m^3} = {m^5}\)
C、\({\left( {mn} \right)^3} = m{n^3}\)
D、\({\left( {{m^2}} \right)^2} = {m^4}\)