when old people eat,they donot build enough muscle with the protein in food;also,insulin fails to
题目
when old people eat,they donot build enough muscle with the protein in food;also,insulin fails to
shut down the muscle breakdown that rises between meals and overnight.急、
答案
老年人在用餐时,食物中的蛋白质并不能为他们肌肉的生长提供帮助,并且,胰岛素也不能够阻碍他们肌肉从早到晚的衰老
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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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