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【简答题】
阅读理解。 Dear Jim, How is it going? It's winter in Toronto. It's snowing and cold. People are wearing coats, scarves and gloves. But we are all having a good time. Some kids are making a snowman (堆雪人).Some are throwing snowballs (扔雪球). My brothers are skiing (滑雪). My mother is cooking for US. She is cooking hot food. It's very delicious. I hope you can come and visit us. Love, John 1. Who writes the letter? ___________________________________________ 2. What's the weather like in Toronto? ___________________________________________ 3. Are the kids playing basketball? __________________________________________ 4. What's John's mother doing? ____________________________________________ 5. What are people wearing? ___________________________________________
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A.
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A.
体心立方
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面心立方
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A.
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金属间化合物
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晶体
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B.
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