课前预习·快乐体验]
Bad news travels quickly.好事不出门，坏事传千里。
一、考考你的预习效果，根据课本P18的课文内容回答下列问题。
1.How many groups did they give talks?
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2.What project did they talk about?
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3.What was the weather like that day?
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4.When did they give the talk?
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5.Who showed some physics?
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二、试着将下列短语英汉互译。
