初二寒假作业本国标版的答案 《轻松快乐过寒假》江苏人民出版社,蓝色的,我要数学,英语,物理
推荐回答(2个)
只有英语。 仅供参考。
练习一
一:
1:honest
2:secret
3:ready
4:nothing
5:humour
6:bowls
7:magazines
8:special
9:slim
10:round
二:
1:Which boy is Peter?
2:Why his legs do not fit under the school desks?
3:Betty and I may not get to see each other often.
4:The boy called Jim wants to see you
5:Do you think climbing is as exciting as skating?
三:
1—5:EDBCA
四:
1—5:BDDBD
6—10:CCBAC
五:
1—5:BABAC
6—10:BCBDC
六:
1—5:AAAAB
练习二
一:
1:geography
2:tennis
3:point
4:health
5:elevator
二:
1:is different from
2:is more boring than
3:the tallest of
4:more subjects than
三:
like classes How many library have
四:
1—5:BDDCC
6—11:BBADAC
五:
1—5:DBABC
6—10:BDBCD
六:
1—5:BBDDC:
练习三
一:
1:tidy
2:President
3:winners
4:remember
5:tickets
二:
1:Nancy went to Suzhou by train last year .
2:She like her mother and likes her mother too.
3:Linda,don't tell anyone about the matter .
4:There are more than two hundred places of interest from Beijing.
5:It is fine ,but he don't go out and stay at home.
三:
1:teachers
2:6:00 a.m
3:6:30 a.m
4:park
5:4:00
6:80
四:
1—5:CBBDB
6—10:CCBBD
五:
1—5:DACBC
6—10:BDACB
六:
1—5:DDDBB
练习四
一:
1:litter
2:metal
3:Encourage
4:calm
5:over
6:shining
二:
1:tourists
2:peaceful
3:angerly
4:importance
5:heavier
三:
1:took
2:lasts
3:is going to be
4:hurry
5:don't will fall
四:
1:join the school trip
2:feel sick
3:make a home page
4:take a underground to go to work
五:
1:What exciting news it is!
2:for the first time
3:What did the teacher tell you not to do?
4:How often do you do a bird count a year?
5:用because连用
六:
1—4:DCBD
5—8:CABD
七:
1—5:DABBA
6—10:CCDCB
八:
1—5:CCDBA
练习五
一:
1:met
2:to make
3:travels
4:paies
5:are watching
6:will finish
7:droped
二:
1:go birdwatching
2:make space for
3:have nowhere to live
4:gives me some advice
5:at a time
三:
1:different from
2:If don't
3:made of
4:won't any more
5:without help
6:rained heavily
7:because of its colourful feathers
8:endangered birds
四:
1:Jiangsu Dafeng is an idea home for Elaphurus davidianus.
2:He will arrive at 8 this morning.
3:l think running is not as exciting as driving.
4:The weather in Kunming is warm and wet aii year round.
5:We welcome visitors from around the world to Suzhou to visit.
6:I look out of the window and saw that people being rushed to remove the snow.
五:
1:telephone return
2:was wrote
3:not to make
4:playing
5:taking
6:terribly
7:moves
8:listens
六:
1:Yes.
2:Wolves
3:Humans
4:These dogs often came near humans to steal some food.
5:The dogs helped them to hunt.They could smell and hear danger before people could. They helped keep people warm on cold nights.
练习六
一:
1—5:DACCA
6—10:CACAD
11—15:DBBAB
16—20:BCCCB
二:
CGAEB
三:
1—5:ADBAD
6—10:DCBBC
四:
1—5:BABC
1—5:BACAD
物理
习一
1沙粒在跳动。声音由物体振动产生。沙粒跳动很厉害。声音的响度与振幅有关。
2振动,音调,空气,信息,
3水可以传声,
4音调,响度,
5次声波,振动,
6声音的音调与振动频率有关,
7音色,空气,
8传播,人耳,声源,
9声音不能在真空中传播,
10dB,0dB,20dB,
11A.
12D
13C.
14B.
15C.
16A.
17C.
18A.,
19丁
甲:声音不能在真空中传播 乙:声音由物体振动产生 丙:音调与振幅有关,音调从低到高,两者都是,
第三题 想一想
1A,2蜜蜂发声不是由双翅振动,3蜜蜂发声由小黑点振动产生,增加声波反射从而减小声波的能量
练习二
液化,凝华,吸,熔化,高,升华,凝华,汽化,放,汽化,汽化放热,汽化,凝华,熔化,温室,热岛效应,加压,凝华放,汽化,液化,水汽化吸热,液化,液化,汽化,升华,凝华,BDBCBB,冰,52,吸热,冰不能太少,卫生球燃烧松枝复燃空气中的氧气有助燃烧,熔化吸热凝固放热,没有不同材料保温效果不同。
练习三
紫外线,热,热效应,平面镜,虚,光的直线传播,平面,虚,1 3,C B A,漫反射,反射,粗糙,4,变大,漫反射,各种,ABCBBBB,略,略,画图略 (3)65度,到平面镜距离,等大,不能,虚,物与像等大,用手电筒射向笔使影子在纸板上,红色 除红色以外的其他色光,红色,白色,除白色以外的其他色光,略
练习4、5
会聚,折射,乙,折射,虚,镜头,底片,凹,后,凸透镜,以内,倒立放大实,凸透,会聚,CAAAD,法线,光的折射,画图略,光的折射,凸透镜,三者中心不在同一直线,像距,物距,不能,能,紫,紫光折射角大,小,大,正确,物距,晶状体,视网膜,凸透镜对光线有会聚作用,靠近凸透镜,发散,折射,大气层空气密度不同,B,塑料膜相当于凸透镜对光线有会聚作用,使底片的感光调物距使底片感到不同颜色的光,
毫米,千米,分钟,地面,火车,车站,运动,静止,船,地面,船,山,20,72,30秒,11,46,3*10的八次,1.5*10的六次,快,匀速直线,相同时间比路程,相同路程比时间,运动,静止,参照物,大,动能,3000,声音不能在真空中传播,72,86.4,B,B,D,D,B,B,A,B,C,B,D,B,A,C,13,控制变量,停表,测量下落时间,自由落体,同时,是, 自由落体定律 ,V=S/T 4500M/15/60H=30000M/H=30KM/H,T=S/T=4500M/6KM/H=45MIN,运动,8M/S,慢,车速60KM/H限速40KM/H,相对于地面是运动的,相对于航天员航天员是静止的
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