单词：ethanoic acid (acetic acid)
酸，醋酸[CH3COOH]
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But he would not admit failure. 但是李将军不会认输。 Led by Pickett of Virginia, thirteen thousand men charged across the valley between the two armies directly at the Union center. 在弗吉尼亚人皮科特的带领下，1.3万士兵越过
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Voice 1 Hello, Im Marina Santee. Voice 2 And Im Ruby Jones. Welcome to Spotlight. This programme uses a special English method of broadcasting. It is easier for people to understand, no matter where in the world they live. Voice 1 It was the year 175
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