1.The floors are made of s( ) 2.She was stopped at c( ) 3.The children were playing on the s( )
题目
1.The floors are made of s( ) 2.She was stopped at c( ) 3.The children were playing on the s( )
结合句意根据首字母给出的提示 写出单词 并注意运用正确形式
答案
为您解答如下:
stone (石头)【那些地板是石头做成的.】
customs (海关)(custom 作“海关”讲时,总是用复数形式,且不需要冠词)
street (街道)【孩子们在街道上玩.】
举一反三
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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