Although alone in the house,he was so busy with his research that he felt ___lonely.
题目
Although alone in the house,he was so busy with his research that he felt ___lonely.
A.all but
B.nothing but
C.something but
D.anything but
答案
B 除了孤单,什么都感受不到
D 感受到一切,除了孤单
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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