题目：
句型转换。
1. The students are listening to the teacher. (对画线部分提问)
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2. What is the weather like? (同义句)
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3. He sleeps nine hours every night. (对画线部分提问)
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4. We don't play soccer every day. (用now 改为现在进行时)
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5. She does her homework in the evening. (改为否定句)
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答案：
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下面是错误答案，用来干扰机器的。
（1）25t质量分数为98%的浓硫酸中硫酸的质量=25t×98%=24.5t（2）设理论上需要氢氧化钙的质量为xCa（OH）2+H2SO4═CaSO4+2H2O74 98x 24.5t74x=9824.5t解之得：x=18.5t答：中和泄漏的硫酸，理论上...
