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Science Lesson
1008-0031
1999 Issue Z2
nong cun shi xue xi zi ran di hao chang suo
zhang qing xi
..............page:30
wo qing lin nong jiang zi ran jiao xue yong gen jing fan zhi zhi wu yi ke
wei zhao qin ; qi bi de
..............page:30-31
wo jiao chuan dong zhuang zhi
wang ming qian
..............page:27
lei dian wen ti xi wu
wang lian qiang
..............page:46
zi ran jiao shi yu huan bao jiao yu
wang li
..............page:47
ge ren tou shang yi fang tian
chen shuang xi
..............page:55
ce liang mo ca li de shi yan fang fa xin tan
yang zu feng ; wang chao wei
..............page:55
wo jia de lv se kong diao
cheng yi
..............page:64
gu li xue sheng zi ji she ji shi yan
wu qing hua
..............page:35
tan suo shi jiao xue zhong xue sheng zhu ti xing de pei yang
zhou jing ; zhou yi
..............page:17-18
tan zi ran jiao xue zhong de mei yu shen tou
huang zuo da
..............page:22-23
ke yuan ji cui
..............page:62-63
zhi zuo sai che mo xing ren shi ji xie
jiang sheng li
..............page:23
wo dui re fu she shi yan de gai jin
gao hui wu
..............page:53
qiao bao guo shu pi gong shu jie shuo guo
sun yao
..............page:64
fei wu zhi zhuan da you ke wei
..............page:60
cai hong wei shi me shi yuan hu xing de
zhao zhao
..............page:45
bian ji bu bao gao
..............page:1
xiao mao diao yu
zhao wen ping
..............page:37
yun yong jian bi hua tu po zhong nan dian
xu mei
..............page:37
yun yong dui bi fang fa shang hao zi ran shi yan ke
sun rui ming
..............page:54
kong qi zhan ju kong jian shi yan de gai jin
wang ming
..............page:54-55
yi yu po de de jiao xue dui ce
zhao he sheng
..............page:21
zhi feng che jiao xue chu tan
chen xing peng
..............page:28
bu ru dong wu
..............page:66
bu shang de zi ran ke
zeng xiang wen
..............page:43
yi gang gan wei li tan shi yan ke jiao xue
qiu yu fu
..............page:24-25
zhi zuo jian yi guang ju zuo
zhang wei
..............page:50-51
gu ti re zhang leng suo shi yan de gai jin
tao xing dong
..............page:36
gen de xi shui zuo yong jiao xue jie lu ji ti hui
zhou chang sheng
..............page:42
ke wai zuo de liang jian shi
zheng xian zhong
..............page:40
zhun bei shi yan zuo liao san tian ban
liu yu jie ; liu gui qin
..............page:13
yin dao xue sheng zhu dong tan jiu
zhang yan
..............page:41
qing jing jiao xue zai huan jing jiao yu zhong de yun yong
xuan rong ping
..............page:48-49
kun chong ke de jiao an
zhang ; zhang ren
..............page:15-16
cong xie jiao an zuo qi
zhang zhi ren ; ben kan bian ji bu
..............page:14-15
yao shan yu jiang jiu
zhang zhi ren
..............page:6
xiao xue de zi ran ke shi wo xi huan ke xue yan jiu
zhao zhong xian
..............page:1
kun chong ke tang shi lu
zhang ; hu xian yun
..............page:6-8
hong shui gei zi ran jiao xue de jing shi
qin pei juan
..............page:49
fan zuo teng
deng li
..............page:64
zi zhi tai yang gao du ce liang yi
yang feng ; zhan yan qin
..............page:50-51
qiao yong yin liao xi guan zuo fan chong shi yan
yin cui ping
..............page:52
bi ma you gong bu ying qiu
..............page:61
li xiang de luo bu ma xian wei
..............page:61
dui shui de fu li shi yan de gai jin
zhang rui xiang
..............page:52
kong qi zhan ju kong jian ke tang shi lu
huang jin qing ; sheng jing jing
..............page:9-11
tie xie de qing xi fang fa
liu min
..............page:52
yi ge cheng gong de xiao shi yan
cao shu zhong
..............page:53
cha ye ( di jiu jiang )
luo jin zuo
..............page:34
rang xue sheng mo yi mo luo mian
hu jin yong
..............page:38
zhua hao zi ran chang shi ke de ke qian he ke hou
qian lin jie
..............page:39
bei zi li de shui liu bu chu lai liao
zuo qing yang
..............page:43