l am doing my homework____my mother is cooking in the kitchen between 6:00 to 7:00 in the evening.
题目
l am doing my homework____my mother is cooking in the kitchen between 6:00 to 7:00 in the evening.
A.before B.after C.while D.as soon as
---My father looks very tired today.
---Yes,l thank so.you know he works____today
A.a little B.too many C.quite a few D.a lot
Everybody needs water.Everything needs water.We use water to wash the bowls and clothes,and o___.Where does all water come from?Some rainwater goes into ground.many people get it from u___ the ground.lt runs in lakes ang rivers.many people get it t____.
答案
1.C 2.D
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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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