防止钢铁的腐蚀是世界级难题，每年全世界钢产量的四分之一因腐蚀而损失

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      Hey, I'm Simon. I have a strong and faithful dog, Bruce. The dog likes1with me. Sometimes he also follows my father to work. One morning when my father worked in the field, he2 his coat and put it under a big tree. He turned  to the dog and said,“3my coat, Bruce!” Bruce sat down on the coat. Later, my father remembered he had to buy some food.  4 he hurried to the shop.   5 shopping, he went home directly and forgot completely about his 6 and the dog. In the evening, I looked for my dog7 in the house, but I8 find him. At this time, my father suddenly remembered his coat and the dog. He went back to the tree   9. He found that Bruce was 10 sitting on the coat!

坚持饭前便后洗手，可以预防多种传染病。这项措施在预防传染病的方法上属于（   ）

蛙类受精卵的孵化受水温影响非常显著，下列表格和曲线图是某种蛙的受精卵在不同水温中孵化的实验结果，请根据图、表数据分析回答

咬文嚼字有时是一个坏习惯，           这个成语的含义通常不很好。但是在文学，无论阅读或写作，我们          有一字不肯放松的谨严。文学借文字          思想情感；文字上面有含糊，就显得思想还没有          ，情感还没有凝练。