children can be instructed in swimming at a very early age.
题目
children can be instructed in swimming at a very early age.
children can be instructed in swimming at a very early age 这句话 can be instructed in 请问这个"be instructed in " 是固定搭配?
如果是固定搭配 是被动语态吗?
答案
be interested in 是固定搭配
意思是对.感兴趣
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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．
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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