云南省保山市2019-2020学年九年级9月义务教育阶段学业水平检测数学试题

适用年级:初三
试卷号:571838

试卷类型:学业考试
试卷考试时间:2019/10/31

1.单选题(共2题)

1.
如图,在△ABC中,∠CAB=70°,将△ABC绕点A逆时针旋转到△AB′C′的位置,使得CC′∥AB,则∠BAB′的度数是(  )
A.70°B.35°C.40°D.50°
2.
点A(3,﹣1)关于原点的对称点A′的坐标是( )
A.(﹣3,﹣1)B.(3,1)C.(﹣3,1)D.(﹣1,3)

2.选择题(共2题)

3.

阅读理解

    A man had a little dog, and he liked it a lot. He would pat (拍) its head, put it on his knee and talk to it. Then he would give it some food from his own plate.

    A donkey (驴子) looked in through the window and saw the man and the dog.

    " Why doesn't he choose me as his pet?" said the donkey. "It is not fair. I work hard, and the dog only shakes its tail, barks and jumps onto the master's (主人) knee. It is not fair. "

    Then the donkey said to himself, "If I do what the dog does, the master may choose me as

his pet. "

    So the donkey ran into the room. He brayed (嘶叫) at the top of his voice. He shook his tail so hard that he knocked over a jar on the table. Then he tried to jump onto the master's knee.

    The master thought the donkey was maniacal , and he shouted, "Help ! Help ! "

    Some men came running in with sticks in their hands and they beat the donkey until he ran out of the house.

"I only did what the dog did, " said the donkey, "and yet they still regard the dog as their pet and they beat me with sticks. It is not fair. "

根据短文内容,选择最佳答案,并将其标号填涂在答题卡相应位置。

4.

阅读理解

    A man had a little dog, and he liked it a lot. He would pat (拍) its head, put it on his knee and talk to it. Then he would give it some food from his own plate.

    A donkey (驴子) looked in through the window and saw the man and the dog.

    " Why doesn't he choose me as his pet?" said the donkey. "It is not fair. I work hard, and the dog only shakes its tail, barks and jumps onto the master's (主人) knee. It is not fair. "

    Then the donkey said to himself, "If I do what the dog does, the master may choose me as

his pet. "

    So the donkey ran into the room. He brayed (嘶叫) at the top of his voice. He shook his tail so hard that he knocked over a jar on the table. Then he tried to jump onto the master's knee.

    The master thought the donkey was maniacal , and he shouted, "Help ! Help ! "

    Some men came running in with sticks in their hands and they beat the donkey until he ran out of the house.

"I only did what the dog did, " said the donkey, "and yet they still regard the dog as their pet and they beat me with sticks. It is not fair. "

根据短文内容,选择最佳答案,并将其标号填涂在答题卡相应位置。

3.填空题(共1题)

5.
支球队参加篮球比赛,共比赛了45场,每两队之间都比赛一场,则可列方程________.

4.解答题(共2题)

6.
如图,已知点的坐标分别为,将点按顺时针方向旋转得到

(1)画出
(2)的对应点为,写出点的坐标;
(3)求出.
7.
如图,已知在中,,先把绕点顺时针旋转后,再把沿射线平移至相交于点.
(1)判断线段的位置关系,并说明理由.
(2)连接,求证:四边形是正方形.
试卷分析
  • 【1】题量占比

    单选题:(2道)

    选择题:(2道)

    填空题:(1道)

    解答题:(2道)

  • 【2】:难度分析

    1星难题:0

    2星难题:0

    3星难题:0

    4星难题:0

    5星难题:0

    6星难题:0

    7星难题:0

    8星难题:0

    9星难题:5