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Science Lesson
1008-0031
1999 Issue Z1
lun zi ke tang jiao xue shi lu ji ping xi
hao yu zuo ; liu tang yu ; li de jun ; lu pei zuo
..............page:10-13
ke yuan ji cui
..............page:59-62
he ma ma yi qi kan liu xing yu
hu cheng
..............page:64
zhua zhu liang ge fang xiang jiao xue jing de zuo yong
yao ai xiang ; xu zhi xue
..............page:44
qiao zhi er yang hua tan
wang shao qin
..............page:52
huang fen chong de si yang ji shu
zhang xiang zhao
..............page:48-49
zi ran sheng tai bao yu
..............page:66
shen qing xi cai hong
..............page:2
wo jiao xue sheng ren shi bu ru dong wu
chen feng ming
..............page:39
qi qiu zi ji zhang da liao zhi hou
zhang da qian
..............page:41
pan yuan zhi wu chan rao fang xiang zhi mi
huang jing
..............page:48
zen yang bao hu zuo zuo
feng sheng li
..............page:39
hua guan biao ben de jian yi zhi fa
hu bing xu ; ding guang xue
..............page:54
bi xian dai hua jiao xue she bei geng hao
jia nan xue ; sun dian liang
..............page:32
xin nian zhi du zhe 1999 nian bian ji gong zuo yao dian
ben kan bian ji bu
..............page:5-6
bian ji bu bao gao
..............page:1
shui di fang da jing de zhi zuo
yang quan wen
..............page:54
ying bi tiao wu ren shi qi ti de re zhang leng suo
tian ying xin
..............page:52
lun zi duo bing bu yi ding geng sheng li
zhang qi dong
..............page:42-43
jiu di qu cai
xu bo
..............page:47
zhi dao xue sheng yang can de dian di ti hui
zeng guo mei
..............page:46
tan tan nong cun xiao xue zi ran ke lian jiao
wan neng hu ; xu hua ze
..............page:33
qi cai de xuan ze she ji yu shi yan ke jiao xue
cao ya qin
..............page:53
guan yu yong ce li ji dai ti gou ma de wen ti
li fang da ; lin zhi yong ; li guang shan
..............page:51
xiao xue shu xue zhong de zi ran zhi shi
zhang hui ping
..............page:49-50
lian xi nong shi shang hao chang shi ke
jin wei ping
..............page:33
bi hu de wei ba na er qu liao
zhu heng jun
..............page:39
dui bi shi yan he ke wai yan jiu huo dong
huang zhi yuan
..............page:31
zen yang shang hao ke ji huo dong ke
liu ji chang
..............page:25-27
yong jiu yin liao ping zuo kong qi re zhang leng suo de shi yan
jiang chang yang ; wang dan
..............page:52-53
nei ran ji dong li shi yan
zhou hong liang
..............page:54
cha ye ( di si jiang )
luo jin zuo
..............page:20-21
shi zi zuo liu xing yu guan cha ji
yu tao
..............page:63-64
jiao wai zi ran ke dian di
wang yue sheng
..............page:45
nong cun shi zi ran ke de hao ke tang
lu wan chun
..............page:44-45
nan wang de yi ye
tang zheng zuo
..............page:64
gang gan de jiao xue ti hui
wang jian
..............page:51
shi wu de ying yang jiao xue jing yan dian di
tang yan ni
..............page:40
tai yang gao du de liang ke zhong tao lun er ze
zuo ming
..............page:42
ping you shi wo kan dao liao xi wang
liu bao quan
..............page:30
qian yi yu de yu yu zi ran jiao xue zhi zhong
zhang he ping
..............page:22-24
jiao yan yuan xia shui shang ke de chang shi
yang shu qing
..............page:29-30
xue sheng bei da zi ran mi zhu liao
wei jia fu
..............page:44-45
cai hong jia jin qiao ai xin jie shuo guo
hu bei sheng yi du shi xia bao xiao xue zi ran jiao yan zu
..............page:19
sheng bo jiao xue li tan
yuan jing
..............page:41
yong dai ti cai liao ye neng shang hao zi ran ke
chai jian li
..............page:52-53
ting yuan jing ji yu zi ran jiao xue
..............page:55-58
can bu zuo jian ye ke bian yong cheng e
xia xiao zuo
..............page:38
liang ci jiao zhi wu de guo shi
lei dao guo
..............page:43
jie sheng shi jian de hao ban fa
xu yuan cheng
..............page:40
rang xue sheng zhu dong fa yan
li qiang
..............page:38
yi wai de shou huo
wang yong mei
..............page:42-43
cheng gong bu bi zai wo nu li jue bu hou ren
lin li wu
..............page:1
li yong nong cun zi ran you shi jiao gen de zuo yong
zhang cai shuang
..............page:32-33