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1.What is my body made of_我的身体由什么组成？[防断更微0].pdf
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10.How do maglev trains work_磁悬浮列车是如何运行的？[防断更微0].pdf
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11.Does a butterfly remember its time as a caterpillar_蝴蝶记得自己当毛毛虫的时光吗？[防断更微0].pdf
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12.How do we get taller_我们是如何长高的？[防断更微0].pdf
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13.How do animals camouflage_动物是如何伪装的？[防断更微0].pdf
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14.Is there a magnet so strong that it will pull us by the iron in our blood_有没有一种足够强的磁铁能通过我们血液中的铁把我们吸住？[防断更微0].pdf
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15.How does Velcro® stick_魔术贴是如何粘合的？ [防断更微0].pdf
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16.How does a honeybee know what job to do_蜜蜂是如何知道自己该做什么工作的？[防断更微0].pdf
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17.How do our eyes work so we can see_我们的眼睛是如何工作让我们看到东西的？[防断更微0].pdf
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18.How do you make gears spin_如何让齿轮转动？[防断更微0].pdf
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19.Why do freckles come in dots on your face_为什么雀斑会以点状出现在你的脸上？[防断更微0].pdf
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2.When did time begin_时间何时开始的？[防断更微0].pdf
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20.Why doesn’t rain taste salty_雨水为什么尝起来不咸？[防断更微0].pdf
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21.Do dogs cry_狗会哭吗？[防断更微0].pdf
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22.How do bogies get in my nose_鼻屎是如何出现在我鼻子里的？[防断更微0].pdf
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23.Why will the Sun explode and make us extinct_太阳会爆炸并导致我们灭绝吗？[防断更微0].pdf
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24.Why don’t jellyfish tentacles get tangled_水母的触手为什么不会缠在一起？[防断更微0].pdf
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25.How do the molecules in air produce air pressure_空气中的分子如何产生气压？[防断更微0].pdf
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26.Why does chocolate taste so nice_巧克力为什么这么好吃？[防断更微0].pdf
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27.How does electricity get in your body to shock someone_电流是如何进入人体使人触电的？[防断更微0].pdf
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28.Why do my muscles hurt when I exercise_我运动时为什么肌肉会疼？[防断更微0].pdf
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29.Is there an extinct species of penguin_存在灭绝的企鹅物种吗？[防断更微0].pdf
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3.How was the first person born_第一个生命是如何诞生的_[防断更微0].pdf
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30.How does a light light up_灯泡是如何发光的？[防断更微0].pdf
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31.Why do chemicals explode when mixed together_化学物质混合时为什么会爆炸？[防断更微0].pdf
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32.How many galaxies are there_宇宙中有多少个星系？[防断更微0].pdf
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33.Did dinosaurs have wings_恐龙有翅膀吗？[防断更微0].pdf
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34.Is it possible to transfer a human brain into a robot_人类大脑可以转移到机器人中吗？[防断更微0].pdf
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35.How does the Moon affect the tides of the sea_月球如何影响海洋潮汐？[防断更微0].pdf
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36.Why doesn’t it tickle when you tickle yourself_为什么自己挠自己不会觉得痒？[防断更微0].pdf
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37.How do birds fly_鸟类如何飞行？[防断更微0].pdf
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38.How do planes go so fast_飞机为什么能飞得这么快？[防断更微0].pdf
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39.Why does our skin go all wrinkly in the bath_我们的皮肤在洗澡时为什么会起皱？[防断更微0].pdf
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4.Why does water feel wet_为什么水摸起来是湿的？[防断更微0].pdf
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40.Why does the Sun seem to follow me everywhere I go_为什么无论我走到哪里太阳似乎都跟着我？[防断更微0].pdf
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41.How do you make toilet paper_卫生纸是如何制作的？[防断更微0].pdf
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42.Why do stars twinkle_星星为什么会闪烁？[防断更微0].pdf
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43.What’s inside your face and head other than your brain_除了大脑，你的面部和头部还有什么？[防断更微0].pdf
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44.Why can’t we live without trees_为什么我们离不开树木？[防断更微0].pdf
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45.How does our body heal_我们的身体是如何愈合的？[防断更微0].pdf
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46.Why do some trees lose leaves in the summer_为什么有些树在夏天会落叶？[防断更微0].pdf
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47.How do volcanoes erupt_火山是如何喷发的？[防断更微0].pdf
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48.How exactly is glass made_玻璃究竟是如何制作的？[防断更微0].pdf
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49.Why does our hair turn grey when we get older_我们为什么会随着年龄增长头发变白？[防断更微0].pdf
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5.Could you jump off the world_你能跳出地球吗？[防断更微0].pdf
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50.Do aliens exist_外星人存在吗？[防断更微0].pdf
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51.Do plants have feelings_植物有情感吗？[防断更微0].pdf
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52.Why do humans get old and die_人类为什么会衰老、死亡？[防断更微0].pdf
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53.Why are bubbles round and not any other shape_为什么泡泡是圆形而不是其他形状？[防断更微0].pdf
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54.How do you fall asleep_人是如何入睡的？[防断更微0].pdf
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55.Why do we pollute Earth_我们为什么会污染地球？[防断更微0].pdf
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56.Why, when you’re doing boring things, does time go slowly？为什么做无聊的事时时间过得慢_[防断更微0].pdf
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6.Why is the sky blue_为什么天空是蓝色的_[防断更微0].pdf
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7.Will scientists bring back the dinosaurs_科学家能复活恐龙吗？[防断更微0].pdf
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8.Where does my belly button go_我的肚脐眼通向哪里？[防断更微0].pdf
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9.Why does ice cream melt_为什么冰淇淋会融化？[防断更微0].pdf
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