we can save electricity ______ lights when we leave the room A by not turning off
题目
we can save electricity ______ lights when we leave the room A by not turning off
B by turning off C by not turning on D by turning on
Please remember _____ your teeth before you go to bed
A washing B wash C brush D to brush
The baby will cry if you _____ his toys
A put out B take off C turn on D take away
The Oriental Pearl TV Tower is one of the tallest _____ in the world
A buildings B build C built D building
If there is no rain,there_____ no water to drink
A will be B be C is D have
People can only live _____ three days without water
A in B in about C about D for about
答案
b d d a a c
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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