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下列计算正确的是(  )

A: ​(-2)2=-2

B:(a2)5=a10

C:a2+a5=a7

D:65×25=125​

上一题 下一题 0.0难度 选择题 更新时间:2010-05-20 08:37:15

答案(点此获取答案解析)

B

同类题1

55×2-105=0

同类题2

根据短文内容,完成下列各题。

    Tomorrow is Thanksgiving, the day when over 46 million turkeys will be at dinner tables all over the USA. There are two lucky turkeys. They are Cobbler and Gobbler. They won't be on the table. They will live happily on George Washington's Mt.

    The 21-week-old birds come from Rockingham County, Virginia. They look the same. But they really have different interests. Cobbler likes pop music, but Gobbler likes classical(古典的) music!

    Now in its 65th year, the turkey pardoning game was started by President Truman. However, this year, President Obama asked people to vote(投票) on Facebook. He wanted to make sure they would like to pardon these two turkeys. But the turkeys know nothing about it. They just want to run away!

    After Thanksgiving Day, the two will leave for their new home. But they have to meet visitors until January 6th, 2012, before going to their new home! We wish Cobbler and Gobbler a long and healthy life.

同类题3

选择正确的英文单词。

衬衫

同类题4

说说下列句子的意思:

同类题5

设数列{an}、{bn}都是等差数列,且a1=25,b1=75,a2+b2=100,则a37+b37等于(  )
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