下列说法中正确的是{"A":"23\u8868\u793a2\u00d73\u7684\u79ef","B":"\u4efb\u4f55\u4e00\u4e2a\u6709\u7406\u6570\u7684\u507

题干

下列说法中正确的是（）

A：2³表示2×3的积

B：任何一个有理数的偶次幂是正数

C：－3²与 (－3)²互为相反数

D：一个数的平方是 $\frac{4}{9}$ ，这个数一定是 $\frac{2}{3}$

上一题下一题 0.0难度选择题更新时间:2019-10-18 08:47:08

Our Trip to Yibin City
When	On Friday.
How	We will go there 1.
What	But you will need to bring 2 .
Where	Then in the afternoon we will go to 3.
What time	⑴Now please remember that the bus will leave right at 4 . ⑵Tell your parents we'll be back at school 5.