完形填空there arehundreds of laughter____,the people in these clubs get together every morning,
题目
完形填空there arehundreds of laughter____,the people in these clubs get together every morning,
___they put up their hands above their heads,then they pretend to langh ,soon everyone is laughing happily,people say they feel well after___ together. for one thing,laughter is good exercise,when you laugh,you___ many muscles in your boby,Scientists say that one hundred laughs equal ten minutes___ running.laughing helps you relax. thatis a hard question to ___.we konw that people laugh more often in a group. in England people say that laughter is the best___ to the sick people.some think that laughter helps sick people get___ do you think so,too 急啊,望高手解答,能做多少算多少
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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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