第三单元自然界的水(1)2H20通电2H2↑+O2↑(2)2Hg0△2Hg+O2↑(3)2H2+0点燃2H0(4+C2点燃2HC1(5)2KMn04K2MnO4+MnO2+02第四单元物质构成的奥秘()2H,0通电2Ht+02↑(2S+0,点燃s0,第五单元化学方程式(...

每日小纸条Day2冠词练习姓名：分数：日期：一、选词填空aanthe1.The earth goes around the sun.2.I can play the guitar well.3.Tom watched an interesting movie yesterday4.Jerry is such a...