括号部分提问 There is (some)beef on the plate.That shirt is (fifty yuan).
题目
括号部分提问 There is (some)beef on the plate.That shirt is (fifty yuan).
I can see (twelve kites) in the sky.
There are (one hundred) cows on the farm.
There is (a ) computer in my room.
We have (three) new teachers.
答案
What can you see in the sky?
How many cows are there on the farm?
How many computer in your room?
How many new teacher do you have?
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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