2021寒假作業(yè)七年級(jí)答案

1、2021 寒假作業(yè)七年級(jí)答案參考答案一. 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(duì)角線的形式 10. B二. 填空題11. 6, CO, CD, CE, OD, OE, DE; 5, OC, CA, OD, DE, EB12. AB; AB; AD 13. 2007 14. 3, 45, 36; 22.54 15. 正方體, 4, 5, 616. 最喜歡語(yǔ)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 X 107三. 計(jì)算題： 21

2、. 622. 解原式 =23. 解析: “+ “- 號(hào)把式子分成四局部 , 分別計(jì)算再加減 .解原式=-9+9+25 X ( )-0.09- 0.9=-9+9+(-20)-0.1=-20-0.1=-20.124. -1099四. 解方程： 25. x=11 26. x=-9 27. y=五. 解答題： 28. 1 對(duì) 4, 2 對(duì) 5, 3 對(duì) 629. 原式 =b-a+a+c+c-b=2c 30. a+b=0, c=0, d=1(a+b)d+d-c=131. 解：/ 仁400, / BOD=900-400=500/ AOD=1800-500=1300,/ AOCfZ AOD互補(bǔ),/ 3=50

3、0, / 2= / AOD=65032. 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( C).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 CEDBA2125 CBCBD 2630 CCCDA 3135 BDCDA 3640 CADBC41. helps 42. swimming 43.ea

4、ts 44.kilometers45. make 46. be 47. am playing 48.easily49. criminals 50. strawberries 51. washing 52.interesting53. waiting 54. message 55. candles 56. went57. ride 58. took 59. expensive 60. stayed61.On the first night 62. played badminton63.feel about the trip 64. learned a lot65. took the (a) bu

5、s 66. one bowl of mutton soup67. What kind of noodles 68. drew many pictures69. long brown hair 70. medium build7175 CABCD 7680 CABAD 8185AACBC 8690 CABGFOne Possible VersionLast 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 m

6、et at the school gate. Wheneveryone arrived, we started.All of us like riding, so we went thereby bike. After about 80 minutes ride, we got there. Wefound it a beautiful place because there were many flowers and fruits there. So some students took photos, some played games or picked flowers. The oth

7、ers 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.第一局部 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 c26.1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2b 歐洲 ;a 長(zhǎng)安 4 分3西域都護(hù) 2 分28.1a 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