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发表于 2012-6-26 14:04:14
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Exercise Twenty-eight
一、1.will be shown 2.was seen to hold 3.was made to do 4.is finished 5.will come 6.to travel 7.Does should be done 8.being watered 9.be hung 10.have been built 11.have been raised 12.happened didn’t hurt 13.is repaired 14.are written sells
15.was appeared 16.will come 17.will watch 18.has been invited 19.looked 20.to set
二、1.give out leaflets ask people
2.helps poor young girls return school
3.need to be finished
4.has busy learning
5.have written to her hasn’t written to me back yet
6.possible to at the same time
7.kept asking himself get money by sending goods
8.seemed to happened is all over
9.seems to be
10.make your voice louder
Exercise Twenty-nine
一、DADDC DCADB
二、1.travels 2.make 3.practising playing 4.chatting 5.drove 6.Taking 7.are having 8.to get 9.aren’t will lose 10.not to watch
三、1.is same size as
2.is a little different from
3.fewer lessons than more free time
4.one the other
5.how to cook
6.have enough time
Exercise Thirty
一、CCBCA
二、1.tasty 2.mix 3.most useful 4.longer 5.popless 6.easily 7.monkeys twelfth fattest 8.heroes 9.languages 10.ideal 11.English close 12.healthier 13.artical 14.practise 15,scientists 16.is those money used for To help children in poor areas 17.be talked with kindness 18.be listened carefully 19.to be treated well 20.instead of working 21.thank for teachers’ support and help.
三、My ideal school is like a park. It is very beautiful. There are flowers and trees all round the school. School time starts at 8.30am and finishes at 3.30pm. Each class has only 18 students. Every students like study. The teachers are friendly to us. We study Chinese ,Math ,English ,History , Geography and other subjects. We have only one and a half hours’ homework to do everyday. We like our school.
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物理
练习一
一、g mg t kg 质量 不变 破裂 液体凝固增加体积 变大 不变 5.4 1.8 3 0.9×103 kg/m3 7 81.4 不变 4.6 135 酒精 盐水 水的体积随温度变化先变小后变大 水在4℃时体积最小 物体数量多 数据更精确
二、ADDCA CCACB A
三、26. 158 20
27.水、托盘天平 在容器中装满水，分别测出容器的质量和水加容器的质量，则
28. ① 应该在左盘放物品，右盘放砝码
四、29.（1）水，量筒，天平，铁球。
（2）解：已知： 求V
∵10≠15
∴空心的
（3）解：15-10=5
（4）解：已知：
5+79=84g
30.解：已知： 求V
已知：m=400g V=500 求密度
练习二
一、空气瓶内变为红色 相同 分子在永不停息的做无规则运动 先变小后变大 玻璃分子在水中受到水分子的吸引力 不会 分子之间有空隙 分子在永不停息地做无规则运动 速度 变高 摩擦起电 电 吸引 摩擦 摩擦起电 分子之间有吸引力 恒星 变 恒星 星系 恒星 电子、质子 分子、万里长城、十层楼房、一只鸡蛋、一个人 八 月球 不是 光年 纳米
二、CCBCD DCDBC
三、24.分子之间有空隙 气球跑气
25.正电荷 负电荷 负 强 能
26.同种电荷互相排斥 B球受到的排斥力会慢慢变小吗？
27.1.分子在永不停息地做无规则运动 2.分子之间有空隙
28.解： （个）
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楼主: admin
发表于 2012-6-27 09:00:03
