高二英語的寒假作業答案
(一)答案:1. brought --- bring 2. part ---parts 3. or – and
4. at 去掉 5. study 後加the 6. that --- what 7. song—songs
8. will 後加be 9. other –-- others 10. it –- them
(二)1. and 去掉 2 have – had 3. into – in 4. something – anything
5. is – was 6. meals 前加for 7. happening – happen
8. why – how 9 in-for 10. book – books
(三)答案:n - spent 2. a 前加as 3. excited – excitedly 4. flew –
flies 5. day 去掉 6. At – In 7. In the evening 8. hardly – hard 9. class – classes 10. for 後加 a
(四)答案:1. much – very ere-everywhere 3. people 前加of
4. to 後加the 5. that – what 6. but – however 7. done – made
8. one – it 9. in – on 10. more 去掉
(五)答案:1. in 去掉 2. makes – made 3. darkness – dark
4. the – a 5. cloth--clothes 6. this – that 7. beggar – beggar’s
8. saying – say 9. While – When 10. What – How
(六)答案:1. for – to 2. woman – women 3. fewer – less
4. change – changed 5. women 後加 who – wanted
7. doesn’t --didn’t 8. been去掉 9. either – too10. the 去掉
(七)答案:1. arrived 後加in2. a – the3. for 去掉
4. understand 後加me 5. time – times6. either – neither --his
8. it – that 9. anything – something 10. by – in
(八)答案:1. spending- spend 2. was 去掉 – later
4. by – in 或a 去掉 5. on – in 6. was 去掉7. water 後加to
8. to 後加the 9. clothing – clothes 10. surprising – surprised
(九)答案:1. lesson – lessons 2. as – like 3. find – found 4. it – them 5.
such – too (改 so不對) ted – shout yone--everyone’s
8. the 前加of 9. with – of 或 full – filled 10. was
(十)答案:1. have 去掉 2 works – work 3. learn – learning
4. because – that 5. interesting – interest 6. and – but 7. will 後加be
8. Beside – Besides 9. and 去掉 10. there 前加where
作業一:短文改錯
(一)答案:1. brought --- bring 2. part ---parts 3. or – and
4. at 去掉 5. study 後加the 6. that --- what 7. song—songs
8. will 後加be 9. other –-- others 10. it –- them
(二)答案:1. and 去掉 2 have – had 3. into – in
4. something – anything 5. is – was
6. meals 前加for 7. happening – happen
8. why – how 9 in-for 10. book – books
(三)答案:n - spent 2. a 前加as 3. excited – excitedly 4. flew –
flies 5. day 去掉 6. At – In 7. In the evening 8. hardly – hard 9. class – classes 10. for 後加 a
(四)答案:1. much – very ere-everywhere
3. people 前加of 4. to 後加the 5. that – what
6. but – however 7. done – made 8. one – it
9. in – on 10. more 去掉
(五)答案:1. in 去掉 2. makes – made 3. darkness – dark
4. the – a 5. cloth--clothes 6. this – that 7. beggar – beggar’s
8. saying – say 9. While – When 10. What – How
(六)答案:1. for – to 2. woman – women 3. fewer – less
4. change – changed 5. women 後加 who – wanted
7. doesn’t --didn’t 8. been去掉 9. either – too10. the 去掉
(七)答案:1. arrived 後加in2. a – the3. for 去掉
4. understand 後加me 5. time – times6. either – neither --his
8. it – that 9. anything – something 10. by – in
(八)答案:1. spending- spend 2. was 去掉 – later
4. by – in 或a 去掉 5. on – in 6. was 去掉7. water 後加to
8. to 後加the 9. clothing – clothes 10. surprising – surprised
(九)答案:1. lesson – lessons 2. as – like 3. find – found 4. it – them 5.
such – too (改 so不對) ted – shout yone--everyone’s
8. the 前加of 9. with – of 或 full – filled 10. was
(十)答案:1. have 去掉 2 works – work 3. learn – learning
4. because – that 5. interesting – interest
6. and – but 7. will 後加be 8. Beside – Besides
9. and 去掉 10. there 前加where
作業二:綜合語法填空題
(1)答案:1. that2. healthiest 3. contains4. in
5. about 6. of 7. a8. Westerners h 10. illnesses
(2)答案; 1. Because 2. that 3. letting 4 . Successful5. like 6. where 7. setting
8. Unsuccessful9. they 10. the
(3)答案; 1. nineteenth 2. where3. or 4. tells
5. The 6. other 7. themselves 8. thankful 9. forward10. living
(4)答案: 1. was honored 2. married 3. Where 4. lawyer
5. surprisedly 6. organization 7. independence
8. including 9. However rtunately
(5)答案:or pt 4. Environmental solved
(6)答案:1. had been 2. finding3. recently. 4 employment
e6 without7. Therefore/Thus
8 risingly 10. So
(7)答案: 1. that2. faster 3. or (else) / otherwise4. wakes5. flashing 6. death 7. both8. running
9. whether 10. hesitation
(8)答案: 61. being 62. and63. disappointed 64. to65. caught
66. to stop 67. riding 69. me/mine70. Suddenly
作業三:完型填空
(一) 答案:1~5 ADCDA 6~10 BCAAB11~15 CCCAD
(二)答案; 1~5 BADCA 6~10 DCDAB11~15 BCDAC
(三)
(三)答案:1~5 DBCDA 6~10 BCACB 11~15 DCDAA 16~20 BCABC
(四)答案:1~5 DBCBA 6~10 CDABC 11~15 CACBD 16~20 AAABD
(五)答案; 1~5 BDABC 6~10 BDBAC 11~15 BACDD 16~20 BCAAD
作業四:閱讀理解
(1) 1D2 C3 B4 B5 D
(2)1C2 C3 A4 C5 B
(3) 1C2 A3 A4 B5 C
(4) 1D2 B3 D4 A5 C
(5) 1C2 A3 D4 D5 B
(6) 1D2 B3 C4 A5 C
作業五(答案略)
16~20 BABCD 16~20 CDACB
篇二:九年級數學贏在假期答案
">解答題
1. (2012遼寧鞍山8分)如圖,某社群有一矩形廣場ABCD,在邊AB上的M點和邊BC上的N點分別有一棵景觀樹,為了進一步美化環境,社群欲在BD上(點B除外)選一點P再種一棵景觀樹,使得∠MPN=90°,請在圖中利用尺規作圖畫出點P的位置(要求:不寫已知、求證、作法和結論,保留作圖痕跡).
【答案】解:如圖所示:
點P即為所求。
【考點】作圖(應用與設計作圖),線段垂直平分線的性質,圓周角定理。
【分析】首先連線MN,作MN的垂直平分線交MN於O,以O為圓心, MN長為半徑畫圓,交BD於點P,點P即為所求.
2. (2012遼寧丹東8分)已知:△ABC在座標平面內,三個頂點的座標分別為A(0,3),B(3,4),C(2,2).(正方形網格中, 每個小正方形的邊長是1個單位長度)
(1)畫出△ABC向下平移4個單位得到的△A1B1C1,並直接寫出C1點的座標;
(2)以點B為位似中心,在網格中畫出△A2BC2,使△A2BC2與△ABC位似,且位似比為2︰1,並直接寫出C2點的座標及△A2BC2的面積.
【答案】解:(1)如圖,△A1B1C1即為所求,C1(2,-2)。
(2)如圖,△A2BC2即為所求,C2(1,0),△A2BC2的面積:10
【考點】作圖(平移和位似變換)。
【分析】(1)根據網格結構,找出點A、B、C向下平移4個單位的對應點A1、B1、C1的位置,然後順次連線即可,再根據平面直角座標系寫出點C1的座標。
(2)延長BA到A2,使AA2=AB,延長BC到C2,使CC2=BC,然後連線A2C2即可,再根據平面直角座標系寫出C2點的座標,利用△A2BC2所在的矩形的面積減去四周三個小直角三角形的面積,列式計算即可得解:
△A2BC2的面積=6×4- ×2×6- ×2×4- ×2×4=10。
3. (2012遼寧阜新10分)如圖,在由邊長為1的小正方形組成的網格中,三角形ABC的'頂點均落在格點上.
(1)將△ABC繞點O順時針旋轉90°後,得到△A1B1C1.在網格中畫出△A1B1C1;
(2)求線段OA在旋轉過程中掃過的圖形面積;(結果保留π)
(3)求∠BCC1的正切值.
【答案】解:(1)畫圖如下:
(2)由勾股定理得, ,
線段OA在旋轉過程中掃過的圖形為以OA為半徑, 為圓心角的扇形,∴ 。
答:線段OA在旋轉過程中掃過的圖形面積為 .
(3)在Rt 中, 。
答:∠BCC1的正切值是 。
【考點】網格問題,旋轉變換作圖,勾股定理,扇形面積,銳角三角函式的定義。
【分析】(1)根據圖形旋轉的性質畫出旋轉後的圖形即可。
(2)先根據勾股定理求出OA的長,再根據線段OA在旋轉過程中掃過的圖形為以OA為半徑,∠AOA1為圓心角的扇形,利用扇形的面積公式得出結論即可。
(3)直接根據銳角三角函式的定義即可得出結論。
4. (2012遼寧錦州8分)如圖所示,圖中的小方格都是邊長為1的正方形,△ABC與△A'B'C'是以
點O為位似中心的位似圖形,它們的頂點都在小正方形的頂點上.
(1)畫出位似中心點O;
(2)直接寫出△ABC與△A′B'C'的位似比;
(3)以位似中心O為座標原點,以格線所在直線為座標軸建立平面直角座標系,畫出△A'B'C'關於點 O中心對稱的△A″B″C″,並直接寫出△A″B″C″各頂點的座標.
【答案】解:(1)圖中點O為所求:
(2)△ABC與△A'B'C'的位似比等於2:1 。
(3)△A''B''C''為所求,A''(6,0); B''(3,-2); C''(4,-4)。
【考點】作圖(位似和中心對稱變換),平面直角座標系和點的座標。
【分析】(1)對應點連線的交點即為位似中心點。
(2)根據網格中的距離即可寫出△ABC與△A′B'C'的位似比。
(3)作出△A'B'C'關於點 O中心對稱的△A″B″C″,根據平面直角座標系中的位置寫出△A″B″C″各頂點的座標。
5. (2012遼寧營口8分)如圖,在平面直角座標系中,△ABC的三個頂點座標分別為A( , )、 B( ,1)、C(0, ).
(1) 點B關於座標原點O對稱的點的座標為__________;
(2) 將△ABC繞點C順時針旋轉 ,畫出旋轉後得到的△A1B1C;
(3) 求過點B1的反比例函式的解析式.
【答案】解:(1)(1,﹣1)。
(2)作圖如下:
(3)由(2)得B1點座標為(3,﹣1),
設過點B1的反比例函式解析式為 ,
把點B1 (3,﹣1) 代入 中,得 =﹣3 。
∴反比例函式解析式為 。
【考點】作圖(旋轉變換),關於原點對稱的點的座標,待定係數法,曲線上點的座標與方程的關係。
【分析】(1)根據兩個點關於原點對稱時,它們的座標符號相反,可得出答案。
(2)分別找到各點的對應點,然後順次連線即可得出旋轉後得到的△A1B1C。
(3)根據(2)所得的圖形,可得出點B1的座標,然後利用待定係數發可求出過點B1的反比例函式的解析式。