because this material is good to keep external heat out of the house 帮忙分析下结构
题目
because this material is good to keep external heat out of the house 帮忙分析下结构
答案
because引导的从句.that省略.从句中this material是主语,is good to词组做谓语(对..有好处),剩下的都是宾语,宾语中是一个词组(keep...out of)
翻译:因为这种材料能够很好的防止外部的热量进入这个房间
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已知函数f(x)=x,g(x)=alnx,a∈R.若曲线y=f(x)与曲线y=g(x)相交,且在交点处有相同的切线,求a的值和该切线方程.
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