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07-22
七年级暑假学与练完整答案包括语文、数学、英语、科学四部分。
暑假学与练数学(七年级)参考答案
(一)
1. 气球下降6米 2. 0,0 3. -3,3,3 4. 5,-4,0 5. >,<,= 6. 0
7. 36 8. 略 9. B 10. B 11. C 12. B 13. 正整数:10,+68;负整数:-20;正分数:0.22,+9.78,0.3,+ ;负分数:-2.5, ;正有理数:10,0.22,+9.78,+68,0.3,
+ ;负有理数:-2.5, ,-20 14. 数轴略,-3 <-|-2|<0<-2.5的相反数<4
15. (1) 4,6,-4 (2) 略 16. 2009
(二)
1. (1) -6 (2) -4 2. -9+2-7-5+4 3. 5 4. -10 5. A 6. D 7. A
8. (1) -30 (2) -3.5 (3) 19 (4) -2 9. ±2,±14 10. (1) 9
(2) -498,4,506 11. (1) 略 (2) π-3.14 (3)
(三)
1. (1) 18 (2) 28 (3) -72 (4) 0 2. 略 3. 0 4. D 5. D 6. C
7. (1) 2 (2) 2 (3) 6 (4) 0 8. 略 9. (1) <,<,>,>,>
(2) nn+1<(n+1)n(0(n+1)n(n>2) (3) >
(四)
1. -2,2,4 2. 2,2,-4 3. 0 4. 千,3 5. D 6. C 7. C 8. D
9. (1) 809.79 (2) 0.083 (3) 5480万 (4) 9.7×107 10. (1) -9 (2) 16
(3) (4) (5) 72 (6) 11. 略
(五)
1. ,±6,±2 2. 13,- 3. 略 4. 5 5. D 6. B 7. C 8. D
9. (1) ±4 (2) - 10. 0.491 11. =2秒,19.6÷340≈0.057秒,最后的结论由学生定 12. 略
(六)
1. 1.3m 2. 3. 略 4. 6x-4y,-a-b+c 5. a+d=b+c 6. -11 7. B
8. C 9. B 10. (1) 0 (2) 17x-1 11. -6 12. (1) y=20.2x (2) 161.6元
13. (1) 计时制:3x,包月制:50+1.2x (2) 3x=3×30=90元,50+1.2x=50+1.2×30=86元,所以包月制合算
(七)
1. x=2 2. 略 3. -1 4. -1 5. 4 6. C 7. B 8. D
9. (1) x= (2) x=11 (3)...
07-22
七年级暑假学与练英语参考答案
(一)
▲用be动词的正确形式填空
1. am 2. is 3. is 4. are 5. are 6. are 7. is 8. is 9. are 10. is ▲从Ⅱ栏中选择与Ⅰ栏各句相对应的句子
1. E 2. G 3. A 4. C 5. F 6. I 7. H 8. D 9. J 10. B
▲按要求改写下列句子
1. The children aren’t starting their lessons.
2. We are having a class meeting now.
3. Are you lying in the sun?
4. He is swimming in the swimming pool now.
5. Lucy often sends e?鄄mails to her friend.
▲完形填空
1. B 2. D 3. C 4. C 5. A 6. B 7. A 8. C 9. B 10. B
(二)
▲用适当的介词填空
1. with 2. in 3. on 4. for 5. in 6. in 7. in 8. by 9. with
10. on
▲根据汉语意思完成句子
1. are getting ready for 2. What are, doing, are listening to 3. at work
4. How many meals 5. moment, watching, at home
▲根据对话内容,用所给动词的正确形式填空
1. speak 2. speaking 3. am writing 4. write 5. is 6. is washing
7. washes 8. is dressing 9. will visit/is going to visit 10. are
▲阅读理解
1. D 2. C 3. C 4. B 5. A
(三)
▲根据要求写出下列单词的正确形式
1. better 2. lying 3. twelfth 4. finally 5. lucky 6. worst 7. was
8. done 9. beginning 10. invitation
▲用所给词的适当形式填空
1. is running 2. do, have 3. is working 4. Is, cleaning 5. shopping
6. getting 7. waters 8. are flying 9. photos 10. bring
▲找出句子中的错误并改正
1. C, look at 2. C, swimming 3. C, hear...
07-22
暑假学与练数学(七年级)参考答案
(一)
1. 气球下降6米 2. 0,0 3. -3,3,3 4. 5,-4,0 5. >,<,= 6. 0
7. 36 8. 略 9. B 10. B 11. C 12. B 13. 正整数:10,+68;负整数:-20;正分数:0.22,+9.78,0.3,+ ;负分数:-2.5, ;正有理数:10,0.22,+9.78,+68,0.3,
+ ;负有理数:-2.5, ,-20 14. 数轴略,-3 <-|-2|<0<-2.5的相反数<4
15. (1) 4,6,-4 (2) 略 16. 2009
(二)
1. (1) -6 (2) -4 2. -9+2-7-5+4 3. 5 4. -10 5. A 6. D 7. A
8. (1) -30 (2) -3.5 (3) 19 (4) -2 9. ±2,±14 10. (1) 9
(2) -498,4,506 11. (1) 略 (2) π-3.14 (3)
(三)
1. (1) 18 (2) 28 (3) -72 (4) 0 2. 略 3. 0 4. D 5. D 6. C
7. (1) 2 (2) 2 (3) 6 (4) 0 8. 略 9. (1) <,<,>,>,>
(2) nn+1<(n+1)n(0(n+1)n(n>2) (3) >
(四)
1. -2,2,4 2. 2,2,-4 3. 0 4. 千,3 5. D 6. C 7. C 8. D
9. (1) 809.79 (2) 0.083 (3) 5480万 (4) 9.7×107 10. (1) -9 (2) 16
(3) (4) (5) 72 (6) 11. 略
(五)
1. ,±6,±2 2. 13,- 3. 略 4. 5 5. D 6. B 7. C 8. D
9. (1) ±4 (2) - 10. 0.491 11. =2秒,19.6÷340≈0.057秒,最后的结论由学生定 12. 略
(六)
1. 1.3m 2. 3. 略 4. 6x-4y,-a-b+c 5. a+d=b+c 6. -11 7. B
8. C 9. B 10. (1) 0 (2) 17x-1 11. -6 12. (1) y=20.2x (2) 161.6元
13. (1) 计时制:3x,包月制:50+1.2x (2) 3x=3×30=90元,50+1.2x=50+1.2×30=86元,所以包月制合算
(七)
1. x=2 2. 略 3. -1 4. -1 5. 4 6. C 7. B 8. D
9. (1) x= (2) x=11 (3) x=0 (4) x= 10. (1) 3x=x+4 (2) x +3=x-2<...
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