2017寒假作業(yè)七年級(jí)答案

字號(hào):

參考答案
    一. 選擇題
    1. C 2. A 3. B 4. D 5. D 6. B 7. C 8. B 9. D [點(diǎn)撥: 注意小正方形成對角線的形式] 10. B
    二. 填空題
    11. 6, CO, CD, CE, OD, OE, DE; 5, OC, CA, OD, DE, EB
    12. AB; AB; AD 13. 2007 14. 3, 45, 36; 22.54 15. 正方體, 4, 5, 6
    16. 喜歡語言課的人數(shù)占全班學(xué)生數(shù)的23%
    17. -1, -1 18. 4x=6-(1-x) 19. x=1或x=-2 20. 1.30×107
    三. 計(jì)算題:21. 6
    22. 解原式=
    23. 解析: “+” “-”號(hào)把式子分成四部分, 分別計(jì)算再加減.
    解原式=-9+9+25×( )-0.09÷0.9=-9+9+(-20)-0.1=-20-0.1=-20.1
    24. -1099
    四. 解方程: 25. x=11 26. x=-9 27. y=
    五. 解答題:28. 1對4, 2對5, 3對6
    29. 原式=b-a+a+c+c-b=2c 30. a+b=0, c=0, d=1(a+b)d+d-c=1
    31. 解: ∠1=400, ∠BOD=900-400=500
    ∠AOD=1800-500=1300,
    ∠AOC與∠AOD互補(bǔ),
    ∴∠3=500, ∠2= ∠AOD=650
    32. 解: 設(shè)乙還需做x天, 由題意得 , x=3
    六. 附加題:33. (1)55.5萬人 (2)6% (3)6000人
    一、1.13 分析:5-(-8)=13(℃).
    2.- 3次(次數(shù)不做要求)
    3. 分析:一副牌里共有54張,而其中黑桃有13張,所以抽到黑桃的可能性是 .
    4.兩 兩點(diǎn)確定一條直線
    第一節(jié)1—5 CCBBB 第二節(jié)1—5 BABCA
    第三節(jié) 1—5 CBBAC 第四節(jié) 1—5 CEDBA
    21—25 CBCBD 26—30 CCCDA 31—35 BDCDA 36—40 CADBC
    41. helps 42. swimming 43.eats 44.kilometers
    45. make 46. be 47. am playing 48.easily
    49. criminals 50. strawberries 51. washing 52.interesting
    53. waiting 54. message 55. candles 56. went
    57. ride 58. took 59. expensive 60. stayed
    61.On the first night 62. played badminton
    63.feel about the trip 64. learned a lot
    65. took the (a) bus 66. one bowl of mutton soup
    67. What kind of noodles 68. drew many pictures
    69. long brown hair 70. medium build
    71—75 CABCD 76—80 CABAD 81—85AACBC 86—90 CABGF
    One Possible Version
    Last weekend, my classmates and I went to Mount Juci. It was so interesting.
    It was a sunny Sunday. At 8:00 in the morning we met at the school gate. When everyone arrived, we started. All of us like riding, so we went there by bike. After about 80 minutes’ ride, we got there. We found it a beautiful place because there were many flowers and fruits there. So some students took photos, some played games or picked flowers. The others sang songs. At half past three in the afternoon, we got back to school. We were tired and hungry but we all felt very happy.
    第一部分 選擇題
    題號(hào) 1 2 3 4 5 6 7 8 9 10
    答案 d b c a b b d c a a
    題號(hào) 11 12 13 14 15 16 17 18 19 20
    答案 c b d c b b a d a c
    題號(hào) 21 22 23 24 25
    答案 d d a a c
    26.
    (1)秦始皇 焚書;(2分)
    (2)儒家—孔子、孟子;道家—老子、莊子;墨家—墨子;法家—韓非子;(8分)
    (3)漢武帝“罷黜百家,獨(dú)尊儒術(shù)”,壓制、打擊其他學(xué)派。(2分)
    (4)觀點(diǎn)不求一致,只要言之有理即可得分。(2分)
    27.
    (1)圖一反映的是張騫出使西域;圖二的東西方商路是指絲綢之路;是東西方經(jīng)濟(jì)文化交流的橋梁。(6分)
    (2)b歐洲;a長安(4分)
    (3) 西域都護(hù)(2分)
    28.
    (1)a大禹;b李冰 (4分)
    (2)都江堰;成都平原。(4分)
    (3)發(fā)動(dòng)群眾,堵疏結(jié)合。(2分)
    29.
    (1)“魏主”是(北魏)孝文帝;洛陽(4分)
    (2)學(xué)習(xí)漢語;鮮卑族。(4分)
    (3)元。(2分)
    (4)加速少數(shù)民族的漢化,豐富和發(fā)展了中原文化, 促進(jìn)北方的民族大融合。(2分)
    (5)中華文明是由中國境內(nèi)的各民族共同創(chuàng)造的;中華文明源遠(yuǎn)流長;中華文明豐富多彩;(言之有理即可)