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Science Lesson
1008-0031
2000 Issue 9
jiao xue bai de mi mi de wu xiang zhu yi
wu yu ping
..............page:34-35
hu die he fei e
..............page:49
gan kong qi yu guan kong qi
qin pei juan
..............page:27
xiao xue zi ran jiao xue ji qu zhong zhong
liu qi
..............page:26-27
ci tie duan liao zhi hou
liu zheng ming
..............page:26-27
ceng ceng she yi ji fa xing qu
gu xu da
..............page:24
bian hua bu xi de di qiu
..............page:40-41
bian fei wei bao zao lv di tan
..............page:45
zhi zuo ye de biao ben jiao xue she ji
wu li hua ; wu qing hua
..............page:15
wo yong wang luo jiao zi ran
zhao li feng
..............page:37-38
zhong guo jiao yu xue hui xiao xue zi ran jiao xue zhuan ye wei yuan hui zhao kai chang wu li shi hui
zhong guo jiao yu xue hui xiao xue zi ran jiao xue zhuan ye wei yuan hui mi shu zu
..............page:7
re dui liu jiao xue jie lu ji ping xi
xu xiao yun ; pan xue fen
..............page:5-6
wo men shi zen yang zuo zheng fa shi yan de
wu ying jin
..............page:25
feng niao
sun yan sheng
..............page:45
zen yang cai neng shang hao zi ran ke ?
xu mei
..............page:31-32
zi zhi feng li fa dian ji mo xing
li dong bao
..............page:35
jing xin she ji wu si di rang
sun shou qin
..............page:13
jie du sheng ming zhi shu
..............page:44
ren ti nei de qi te ya li
ding yong ming
..............page:45
xin ke yin ru zhong de ren zhi mao dun
liu ye jian
..............page:28
sheng hua he ning hua de shi yan
zhu song wei
..............page:25
yu lu pei zuo zhang ding er lao shi qie cuo
jiang er cheng
..............page:11
shuo shuo zhi qu
..............page:4
bian ji bu bao gao
..............page:1
ru he jiao xue sheng xue hui xue xi
chen wu
..............page:17
wei liao ba zhi cai hua cang ying
..............page:43
wo de yi huo
wu xiao zuo
..............page:39
yun yong xu hao ping jia pei yang ke xue tai du
zhou da ming
..............page:14
zi ran gai nian jiao xue de san ge jie duan
zhou guo zhong
..............page:12
chou yang
chen yan zuo
..............page:42
you gen mao xi shui yin qi de tao lun
deng cong xin
..............page:30
xiao xue zi ran jiao xue shi wo men de liang shi yi you
pan yun xi ; sun shu ming
..............page:22-23
neng jing hua huan jing de zhi wu
..............page:29
di qiu da qi
yuan feng xin
..............page:41
san ze jiao xue zhong de xiao cha qu
zuo qing yang
..............page:28-29
wo men zai pei chu liao fan qie wa wa
li wen zuo ; wang bing qing ; ma xin yu
..............page:46-47
yu zuo kai hua
zhe jiang sheng xiao shan shi jing jiang zhen gan lu zhong xin xiao xue zi ran guan cha xiao zu
..............page:47
zi ran jiao xue yu nong ye xie shou
xie rong ting
..............page:30
wo mei you bai lei
guan hong
..............page:32
tan zhong nian ji zi ran shi yan jiao xue
sun rui ming ; zhang gui lan
..............page:33-34