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题目
英语作文爬山

提问时间:2020-08-15

答案
Climbing
It's spring now. The weather is warm and comfortable. It's a good time for hiking. Therefore, my
teacher organized a climbing for us. There is a beautiful mountain in my city and it's target
this time. We took bus there and arrived there at 9 p.m.. After we took off the bus, we started
to climb. The mountain is high but the scenery is beautiful. We are so excited that we climbed
fast at first. But after a while, some of us were tired,especially girls. They did not want to
go on anymore. But some others encouraged and helped them. All of us slowed down our speed, so
that no one was left behind. About 11:00 p.m., we got to the top of the mountain. We were so
happy that we did it. We feel that all the tiredness were worth it.
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.
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