呼呼呼~~~~~
第五篇~~~~~GET~~~~~~
恭喜開板~~~~~~~~~
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Just chemistry! Helium
Boron Carbon Nitrogen Oxygen Fluorine Neon
Aluminum Silicon Phosphorus Sulfur Chlorine Argon
Gallium Germanium Arsenic Selenium Bromine Krypton
Indium Tin Antimony Tellurium Iodine Xenon
Thallium Lead Bismuth Polonium Astatine Radon
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