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Saat kapal terbang, kedua saudara perempuan itu suka bereksperimen, terutama karena mereka suka membaca buku-buku sains eksperimental dan mencerahkan anak-anak mereka lebih awal, dan mereka tidak perlu khawatir tentang matematika, fisika, dan kimia setelah sekolah menengah pertama.
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Apakah Anda masih ingat percobaan kimia yang dulu saya lakukan di sekolah menengah pertama - reaksi antara NaOH dan tembaga sulfat?
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Seorang guru kimia sekolah menengah menggunakan kimia dasar untuk membuat barang selundupan terbaik, dan benar-benar membawa siswanya ke...
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