Linda is also my friend.Now she has(p )with her
题目
Linda is also my friend.Now she has(p )with her
new school.she has no friends there.SOmetimes,she is very(n )and can't answer her classmates' questions.
答案
第一个是problem,第二个nervous
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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