1. | 详细信息 |
某市今年1月份某一天的最高气温是3℃,最低气温是—4℃,那么这一天的最高气温比最低气温高 A. —7℃ B. 7℃ C. —1℃ D. 1℃ |
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计算-5x2-3x2的结果是( ) A. 2x2 B. 3x2 C. -8x2 D. 8x2 |
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某射手在同一条件下进行射击,结果如下表所示:
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计算(x-2)(x+5)的结果是 A. x2+3x+7 B. x2+3x+10 C. x2+3x-10 D. x2-3x-10 |
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点A(-2,5)关于原点对称的点的坐标是 ( ) A. (2,5) B. (2,-5) C. (-2,-5) D. (-5,-2) |
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一个几何体的三视图如左图所示,则这个几何体是( ) A. B. C. D. |
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据调查,某班20为女同学所穿鞋子的尺码如表所示,
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如图,A、B为⊙O上两点,D为弧AB的中点,C在弧AD上,且∠ACB=120°,DE⊥BC于E,若AC=DE,则的值为( ) A. 3 B. C. D. |
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计算的结果是 . |
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计算的结果为__________. |
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在一个不透明的袋子里装有一个黑球和两个白球,它们除颜色外都相同,随机从中摸出一个球,记下颜色后放回袋子中,充分摇匀后,再随机摸出一个球,两次都摸到黑球的概率是__________. |
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如图,在Rt△ABC中,∠ACB=90°,将边BC沿斜边上的中线CD折叠到CB′,若∠B=48°,则∠ACB′=_____. |
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ABCD为矩形的四个顶点,AB=16 cm,AD=6 cm,动点P、Q分别从点A、C同时出发,点P以3 cm/s的速度向点B移动,一直到达B为止,点Q以2 cm/s的速度向D移动,P、Q两点从出发开始到__________秒时,点P和点Q的距离是10 cm. |
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已知抛物线y=-x2+mx+2-m,在自变量x的值满足-1≤x≤2的情况下.若对应的函数值y的最大值为6,则m的值为__________. |
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解方程组: |
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如图,点C、E、B、F在同一直线上,AC∥DF,AC=DF,BC=EF, 求证:AB=DE |
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讲授“轴对称”时,八年级教师设计了如下:四种教学方法: ① 教师讲,学生听 ② 教师让学生自己做 ③ 教师引导学生画图发现规律 ④ 教师让学生对折纸,观察发现规律,然后画图 为调查教学效果,八年级教师将上述教学方法作为调研内容发到全年级8个班420名同学手中,要求每位同学选出自己最喜欢的一种.他随机抽取了60名学生的调查问卷,统计如图 (1) 请将条形统计图补充完整; (2) 计算扇形统计图中方法③的圆心角的度数是 ; (3) 八年级同学中最喜欢的教学方法是哪一种?选择这种教学方法的约有多少人? |
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现有A、B两种手机上网计费方式,收费标准如下表所示:
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19. | 详细信息 |
如图,矩形OABC的边OA、OC分别在x轴、y轴上,点B的坐标为(m,n)(m<0, n>0),E点在边BC上,F点在边OA上.将矩形OABC沿EF折叠,点B正好与点O重合,双曲线过点E. (1) 若m=-8,n =4,直接写出E、F的坐标; (2) 若直线EF的解析式为,求k的值; (3) 若双曲线过EF的中点,直接写出tan∠EFO的值. |
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如图1,在直角梯形ABCD中,AB⊥BC,AD∥BC,点P为DC上一点,且AP=AB,过点C作CE⊥BP交直线BP于E. (1) 若,求证:; (2) 若AB=BC. ① 如图2,当点P与E重合时,求的值; ② 如图3,设∠DAP的平分线AF交直线BP于F,当CE=1,时,直接写出线段AF的长. |
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①Mike lives in Zhengzhou of China. But he is from Canada. He is 12 years old this year. ②He speaks English. And he speaks Chinese a little. Mingming is his good friend. He is a Chinese boy. He often goes to the English Corner. He likes to speak English there. ③It helps him with English. Of course, he often helps Mike with Chinese. Mike has a pet at home. It is a dog. He likes it very much. ④The name of it is Wangwang. Mingming likes it, too. So he often plays with Wangwang in Mike’s home. 根据短文内容, 按要求完成下列各题。 【1】对句①画线部分提问。 __________ __________ Mike live? 【2】将句②变成一般疑问句。 __________ he __________ English? 【3】翻译句③: __________________________________________________ 【4】把句④的同义句补出来: Its __________ __________Wangwang. 【5】下列说法符合短文内容的一项是: A. Mike can speak Chinese well. B. Mingming likes to speak English at the English Corner. C. Mingming has a pet dog. D. Mike and Wangwang are classmates. |
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根据句意及首字母或汉语提示完成单词。 【1】There are many a______in the zoo. 【2】L______________ are the king of the animals 【3】— What’s your sister’s job? —She’s a __________ (导游). And she often takes visitors to some interesting places. 【4】There are some __________ (叶子)on the ground when autumn comes . 【5】Let’s go to v______the Great Wall. |
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用所给词的适当形式填空 【1】Uncle Lin is an _______________(Africa) 【2】There are some ___________ (monkey) in the forest 【3】Let’s go and _________ (play) basketball after school. 【4】The lion ______________(not eat) grass. It likes ______________(eat) meat 【5】Our school _____________(have) more than five hundred students . All of us __________(work) hard at English |
24. | 详细信息 |
句型转换 【1】The zebra eats grass,too(同意句) The zebra ________ ________ grass. 【2】The elephant lives in Africa.(改为一般疑问句) _______ the elephant _______ in Africa? 【3】The zoo has four hundred animals. (改为同义句) _______ _______ four hundred animals in the zoo. 【4】The panda is black and white. (对划线部分提问) _______ _______ is the panda? 【5】The tiger comes from Asia. (对划线部分提问) _______ _______ the tiger come from? |