It was actually a principle of floral succession as well,because plants showed the same transformati
题目
It was actually a principle of floral succession as well,because plants showed the same transformation through time as did fauna.
Some sentences do not belong in the summary because they express ideas that are not presented in the passage or are minor ideas in the passage
以上两个句子中都有because,不同的是一个增加了逗号,一个没有.这两个句子分别是什么从句呢?逗号的增加和去除是否影响句子的使用?请赐教!
答案
是一样的
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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