帮我看看这个倒装结构,还原下句子.
题目
帮我看看这个倒装结构,还原下句子.
Only in the past 20 years have specialists in language study realize that signed languages are unique-a speech of the hand.
答案
the specialists in language study have realized that signed languages are unique-a speech of the hand Only in the past 20 years
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．
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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