（axay）10=a20（ a＞0，且 a≠0），则 x、y 的关系是

题干

（a^xa^y）¹⁰=a²⁰（ a＞0，且 a≠0），则 x、y 的关系是（）

A：xy=2

B：x+y=10

C：x+y=2

D：x= $\frac{y}{10}$

上一题下一题 0.0难度选择题更新时间:2014-06-09 07:02:14

C

good birthday third month time be December because her friend

It is Monday morning. Mary, Lucy, Tina and Judy____in the classroom.

Mary says she loves____because she loves Christmas(圣诞节). She can have a____time with her family. And she doesn't like June.

Lucy likes July____she likes the summer holiday(暑假). In July, her parents take____to travel(旅行). It's really great.

Tina thinks the ____month is good. People can go out with____ and families. They can have a great ____together（一起）.

Judy likes October because her birthday is on the tenth day in this ____. She usually has a good time on her____.