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Science Lesson
1008-0031
1999 Issue 11
dui bi shi yan zuo yong da
li bin
..............page:17
ye shuo chang shi ke jiao xue de can yu du
wang xian de
..............page:15
ke yuan ji cui
..............page:31
ya mo biao ben
zhu zhi feng
..............page:26
yong wan de zuo zuo yao tuo shan chu li
chen gang
..............page:20
qing bao hu hai zi de chuang xin meng ya
liu gui qin
..............page:20
bu yong ke ben ye you hao chu
xu wei jun
..............page:18
luan shi de xing cheng deng shi yan de bu chong
lian xue lin
..............page:26
tan jiu zuo zuo de sheng huo mi mi
ji nan shi duan dian zhen ren zhuang xiao xue ke ji xiao zu
..............page:32
mao xi xian xiang ke tang shi lu yu ping xi
yao ji hong ; wang da guang
..............page:8-10
wo zhao dao liao yi wei hao lao shi hao peng you
ma zhi hua
..............page:25
yu kun jing zhong jian gong fu
yao ai xiang
..............page:18-19
gei hai zi men ti wen de ji hui
shen yan qin
..............page:19
hei bai wu ti xi shou fu she re shi yan she ji
yu shao jin
..............page:27
bian ji bu bao gao
..............page:1
qi fa chuang zao jing shen de yi xie jiao xue shi jian
gao gui xue ; ren si yuan
..............page:16
qian tan ke ji huo dong ke de lei xing ji te dian
tang shou shuang
..............page:22-23
dui 21 shi ji shui zi yuan wen ti de si kao
tang hong xiao
..............page:1
re kong qi jiao an
zhang ai min
..............page:6-7
na yi zhong shi yan fang shi xiao guo hao
zhang su qin
..............page:21
cong yi bei shui bian liang zhan kai yan jiu
zhang qi dong
..............page:12-13
su zhi jiao yu yao zuo hao san jian shi
li de qiang
..............page:4
wo men de ya chi jiao xue she ji
chen juan
..............page:11-12
wo zhe yang gai jin da qi you ya li de shi yan
tian ke deng
..............page:26
re kong qi yi ke de shi yan gai jin
tang zong bi
..............page:27
huan jing bao hu wen zhai
..............page:28-29
yun yong dian jiao shang luan shi de xing cheng
liu shi qing
..............page:12-13
tai yang xi zhong xing xing shu ju de bu chong
wu ru chun
..............page:15
qiao yong pi jiu ping
sheng min
..............page:16
shi yan yu zhi zuo yao zeng jia pian fu liao
ben kan bian ji bu
..............page:25
zhao zhun fang xiang geng shang wei lou
wu xiang dong
..............page:5-6
zi ran xue ke xian zou liao 20 nian
xie xian gang
..............page:5