推荐回答(3个)
1:下列结论中正确的是( ) A:正数、负数统称为有理数 B:无限小数都是无理数
C:有理数、无理数统称为实数 D:两个无理数的和一定是无理数
2:把 3 . 27953 四舍五人到千分位是( ) A:3 . 279 B:3 . 280
C:3 28 D:3 . 27
3:如果一个数的平方等于这个数的绝对值,则这个数是() . A:0, -1 B:.±1
C:0,1 D:0, ±1
4:一个小商店,一周盈亏情况如下(亏为负,单位:元) : 128.3 ,一25. 6 ,一 15, 27,一7, 36.5 , 98 ,则小商店本周的盈亏情况是( ) A:盈 240 元 B:亏 240 元
C:盈 242 . 2 元 D:亏 242 . 2 元
5:过一点画已知直线的平行线可以画() A:一条且只有一条 B:两条
C:不存在 D:不存在或只有一条
6:比3的相反数小3的数是() A:-6 B:6
C:±6
7:某校扮长在国庆节带领该校市级“三好学生”外出旅游,甲旅行社说“如果校长买一张票,则其余学生可享受半价优惠”,乙旅行社说“包括校长在内全部按票价的 6 折优惠”(即按票的 60 %收费)。现在全票价为 240 元,学生数为 5 人,请算一下哪家旅行社优惠?如果是一位校长,两名学生呢?
8:下列说法正确的是() A:两数之和必大于任何一个加数 B:同号两数相加,符号不变,并把绝对值相加
C:两负数相加和为负数,并把绝对值相减 D:异号两数相加,取绝对值较大的加数的符号,并把绝对值相加
9;下列既不是正数又不是负数的是( ) A:一1 B:+ 3
C:0.12 D:0
10:某人以 6千米/时的速度在400米的环形跑道上行走.他从A处出发,按顺时针方向走了1分时间,再按逆时针方向走3分时间,然后又按顺时针方向走5分时间,这时他想回到出发地,至少需要的时间为( ) A:3 分 B:5 分
C:2 分 D:1 分
考试是靠自己的,那些人发过来的试卷,都是自己的。跟你的有不相干。所以嘛,你只要多多仔仔细细地记住平时所学的只是并加以积累,还有,要多多看看,这样,就算你考试时没有认真复习,你的那些知识也会记载脑子里。只要学到的知识,你是永远也忘不掉的!!!!!!!!!!!!!!!!!!!!
经过就度微咯 句 一 一哦微磅 hxjcjjfklkhfgigkug
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