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若a是有理数,则|a|一定( )
A是正数 B不是正数 C是负数 D不是负数
已知ab互为倒数,cd互为相反数,且|x|=4,求式子2ab-(c+d)+x的值.
将下列含有相同发音的单词归类,单词可重复使用.
it big has very his five bag is bike desk kite sit save kid have
/ai/_______________________
/i/________________________
/s/_______________________
/z/_______________________
/v/_______________________
人气:488 ℃ 时间:2020-04-18 21:08:28
解答
1 D.2.5或-3
3,1 five bike
2it big his is kite sit kid
3 desk sit save
4 has is
5 very five save have你确定这答案对么?这是初中的题吧,应该没问题的,英语的第一个还有个kite ,就是3,1 five bike kite噢,好吧第四个还有个his
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