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Due to popular demand, Pearson&Longman Series may take at least 14 days to dispatch. We apologize for any inconvenience caused. 培生朗文系列反應熱烈，出貨時間須要最小14天，不便之處，敬請原諒！

Happy Dragon 100,000 WHYS

Happy Dragon #1 Why is the sea salty? (為甚麼海水是鹹的？)
Happy Dragon #1 Why is the sea salty? (為甚麼海水是鹹的？)
HK$88.00
Happy Dragon #2 Why do cats have pupils of different shape? (為甚麼貓的瞳孔有不同形狀？)
Happy Dragon #2 Why do cats have pupils of different shape? (為甚麼貓的瞳孔有不同形狀？)
HK$88.00
Happy Dragon #3 Why is it dangerous to shelter under a tree during a thunderstorm? (為甚麼不能在樹下避雷雨？)
Happy Dragon #3 Why is it dangerous to shelter under a tree during a thunderstorm? (為甚麼不能在樹下避雷雨？)
HK$88.00
Happy Dragon #4 Why does a rainbow appear after a rain? (為甚麼雨後會出現彩虹？)
Happy Dragon #4 Why does a rainbow appear after a rain? (為甚麼雨後會出現彩虹？)
HK$88.00
Happy Dragon #5 Why do fireflies glow in the dark? (為甚麼螢火蟲會在黑夜裹發光？)
Happy Dragon #5 Why do fireflies glow in the dark? (為甚麼螢火蟲會在黑夜裹發光？)
HK$88.00
Happy Dragon #6 Why does the Sun rise in the east? (為甚麼太陽從東邊升起？)
Happy Dragon #6 Why does the Sun rise in the east? (為甚麼太陽從東邊升起？)
HK$88.00
Happy Dragon #7 Why do parrots mimic human speech? (為甚麼鸚鵡會模仿人類說話？)
Happy Dragon #7 Why do parrots mimic human speech? (為甚麼鸚鵡會模仿人類說話？)
HK$88.00
Happy Dragon #8 Why do tears never run out? (為甚麼眼淚不會流乾？)
Happy Dragon #8 Why do tears never run out? (為甚麼眼淚不會流乾？)
HK$88.00
Happy Dragon #9 Why does the mimosa feel shy? (為甚麼含羞草會害羞？)
Happy Dragon #9 Why does the mimosa feel shy? (為甚麼含羞草會害羞？)
HK$88.00
Happy Dragon #10 Why does the Moon follow us? (為甚麼月亮會跟著我們走？)
Happy Dragon #10 Why does the Moon follow us? (為甚麼月亮會跟著我們走？)
HK$88.00
Happy Dragon #11 Why are there meteors? (為甚麼會有流星？)
Happy Dragon #11 Why are there meteors? (為甚麼會有流星？)
HK$88.00
Happy Dragon #12 Why does a crab walk sideways? (為甚麼螃蟹要橫着走？)
Happy Dragon #12 Why does a crab walk sideways? (為甚麼螃蟹要橫着走？)
HK$88.00
Happy Dragon #13 Why does a solar eclipse happen? (為甚麼會出現日蝕的現象？)
Happy Dragon #13 Why does a solar eclipse happen? (為甚麼會出現日蝕的現象？)
HK$88.00
Happy Dragon #14 Why does a chameleon change its skin colour? (為甚麼變色龍會變色？)
Happy Dragon #14 Why does a chameleon change its skin colour? (為甚麼變色龍會變色？)
HK$88.00
Happy Dragon #15 Why do snails leave a trail of slime? (為甚麼蝸牛爬過會留下黏液？)
Happy Dragon #15 Why do snails leave a trail of slime? (為甚麼蝸牛爬過會留下黏液？)
HK$88.00
Happy Dragon #16 Why don't geckos fall off the wall? (為甚麼壁虎不會從牆上掉下來？)
Happy Dragon #16 Why don't geckos fall off the wall? (為甚麼壁虎不會從牆上掉下來？)
HK$88.00
Happy Dragon #17 Why do roosters crow? (為甚麼公雞會啼叫？)
Happy Dragon #17 Why do roosters crow? (為甚麼公雞會啼叫？)
HK$88.00
Happy Dragon #18 Why do we dream? (為甚麼會做夢？)
Happy Dragon #18 Why do we dream? (為甚麼會做夢？)
HK$88.00
Happy Dragon #19 Why shouldnt we eat poatoes that have sprouted?
Happy Dragon #19 Why shouldnt we eat poatoes that have sprouted?
HK$88.00
Happy Dragon #19 Why should we not eat potatoes that have sprouted? (為甚麼不能吃發了芽的馬鈴薯？)
Happy Dragon #19 Why should we not eat potatoes that have sprouted? (為甚麼不能吃發了芽的馬鈴薯？)
HK$88.00
Happy Dragon #20 Why do we get bubbles from soapy water?
Happy Dragon #20 Why do we get bubbles from soapy water?
HK$88.00
Happy Dragon #21 Why does the spider weave a web? (為甚麼蜘蛛要結網？)
Happy Dragon #21 Why does the spider weave a web? (為甚麼蜘蛛要結網？)
HK$88.00
Happy Dragon #22 Why do stars twinkle? (為甚麼星星會閃爍？)
Happy Dragon #22 Why do stars twinkle? (為甚麼星星會閃爍？)
HK$88.00
Happy Dragon #23 Why is there a rustling sound when we undress? (為甚麼脫衣服會發出摩擦聲？)
Happy Dragon #23 Why is there a rustling sound when we undress? (為甚麼脫衣服會發出摩擦聲？)
HK$88.00
Happy Dragon #24 Why do we have hiccups? (為甚麼會打嗝？)
Happy Dragon #24 Why do we have hiccups? (為甚麼會打嗝？)
HK$88.00
Happy Dragon #25 Why do cut apples turn brown? (為甚麼蘋果切開後會變成褐色？)
Happy Dragon #25 Why do cut apples turn brown? (為甚麼蘋果切開後會變成褐色？)
HK$88.00
Happy Dragon #26 Why do ducks walk in a line? (為甚麼鴨子走路時會排隊？)
Happy Dragon #26 Why do ducks walk in a line? (為甚麼鴨子走路時會排隊？)
HK$88.00
Happy Dragon #27 Why do dogs stick out their tongues? (為甚麼狗會伸出舌頭？)
Happy Dragon #27 Why do dogs stick out their tongues? (為甚麼狗會伸出舌頭？)
HK$88.00
Happy Dragon #28 Why do we wear spectacles? (為甚麼要戴眼镜？)
Happy Dragon #28 Why do we wear spectacles? (為甚麼要戴眼镜？)
HK$88.00
Happy Dragon #29 Why do jellyfish sting people? (為甚麼水母會蟄人？)
Happy Dragon #29 Why do jellyfish sting people? (為甚麼水母會蟄人？)
HK$88.00
Happy Dragon #30 Why are light bulbs able to emit light? (為甚麼燈泡會發光？)
Happy Dragon #30 Why are light bulbs able to emit light? (為甚麼燈泡會發光？)
HK$88.00
Happy Dragon #31 Why is cotton not a flower?
Happy Dragon #31 Why is cotton not a flower?
HK$88.00
Happy Dragon #32 Why is a kite able to fly in the air?
Happy Dragon #32 Why is a kite able to fly in the air?
HK$88.00
Happy Dragon #33 Why does our heart beat faster when we get frightened?
Happy Dragon #33 Why does our heart beat faster when we get frightened?
HK$88.00
Happy Dragon #34 Why are chillies of different colours?
Happy Dragon #34 Why are chillies of different colours?
HK$88.00
Happy Dragon #35 Why do volcanoes erupt?
Happy Dragon #35 Why do volcanoes erupt?
HK$88.00
Happy Dragon#51 Why Are Bees Able ToIdentify Their Hives?
Happy Dragon#51 Why Are Bees Able ToIdentify Their Hives?
HK$88.00
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