八年级(初二): 语文 数学 英语 物理 生物 历史 道法 地理 

八年级(初二)试题

祖国统一一直是全体炎黄子孙的共同愿望。其中标志祖国大陆获得统一,各族人民实现了大团结的事件是(    )
A . 西藏和平解放 B . 人民解放军占领南京 C . 新疆和平解放 D . 人民解放军解放海南岛
麻雀曾被认定为主要害鸟,20世纪50--60年代,我国曾开展过大规模的“剿灭麻雀”运动,现在又发出了保护麻雀的呼声,对此以下说法正确的是(  )
A . 现在的麻雀被人们的“剿灭行动”吓怕了,变乖了,不啄食和糟蹋农作物 B . 现在人们认识到麻雀数量很少,不影响农作物 C . 现在人们认识到自然界中各种生物间是相互依赖、相互制约的,麻雀在自然界的生态平衡中扮演了重要角色 D . 大量捕杀麻雀,破坏了食物网的稳定,影响了其他生物的生存
用如图所示装置探究光的反射定律,白色硬纸板EF垂直于平面镜放置,能沿ON折转,ON垂直于平面镜。

图片_x0020_100017

实验次数

1

2

3

4

5

6

入射角i

15°

30°

45°

60°

70°

80°

反射角r

15°

30°

45°

60°

70°

80°

  1. (1) 让入射光贴着纸板EF沿AO射向平面镜上的O点,观察反射光的方向。多次改变入射光的方向,观察并描绘光的径迹,量出入射角i和反射角r,记录如上表,比较r和i可以得出:光反射时,反射角入射角;
  2. (2) 纸板EF右侧没有沿ON折转时,能观察到反射光,有折转时,观察不到反射光,说明光反射时,反射光线、人射光线和法线在
  3. (3) 将一束光贴着纸板EF沿BO射到O点,光沿图中的OA方向射出,说明光反射时,光路是的。
2019年3月12日,人力资源和社会保障部部长在人民大会堂“部长通道”上说:“今年将重点做好大学毕业生、农民工、退伍军人、就业困难人员等群体就业创业工作,同时将通过开展大规模职业技能培训,加大援助和帮扶就业家庭力度等方面措施,继续‘稳就业’。”这样做是为了保障公民享有宪法规定的(    )
A . 人身权利 B . 平等权 C . 劳动的权利 D . 获得物质帮助的权利
章天同学用一把刻度尺4次测量物理课本的宽度,下列记录数据中错误的是(    )

A . 18.77cm B . 18.76cm C . 18.74cm D . 18.89cm

在远洋轮船的船舷上,都漆着五条“吃水线”,又称“载重线”如图所示,其中标有W的是北大西洋载重线,标有S的是印度洋载重线,当船从北大西洋驶向印度洋时,轮船受到的浮力以及北大西洋与印度洋的海水密度ρ1和ρ2的关系正确的是(  )

A . 浮力增大,ρ1=ρ2 B . 浮力减小,ρ1=ρ2 C . 浮力不变,ρ1>ρ2 D . 浮力不变,ρ1<ρ2
弦乐队在演奏前,演奏员都要调节自己的乐器——拧紧或放松琴弦,这样做主要是改变乐器发出声音的;在演奏过程中,演奏员要根据需要时而用力,时而轻柔的演奏,这样做主要是改变乐器发出声音的。乐曲声是通过传播到现场观众耳中的。 坐在后排的观众即使看不清舞台上的情况也能听出进行独奏的是何种乐器,主要利用了乐器发出声音的不同。
如图,△ABC与△DCB中,AC与BD交于点E,且∠A=∠D,AB=DC

图片_x0020_100012

  1. (1) 求证:△ABE≌DCE;
  2. (2) 当∠AEB=50°,求∠EBC的度数.

如图,已知点A(0,1),B(0,﹣1),以点A为圆心,AB为半径作圆,交x轴的正半轴于点C,则∠BAC等于 度.


I hope everyone         to me.

A . to listen B . is listen C . is listening D . listen
过春节时贴年画是我国的传统习俗。在竖直墙壁上贴长方形年画时,可利用铅垂线来检查年画是否贴正。如图所示的年画的长边与铅垂线不平行,为了把年画贴正,则下列操作方法中正确的是(   )

图片_x0020_100002

A . 换用质量大的重锤 B . 上下移动年画的位置 C . 调整年画,使它的长边与铅垂线平行 D . 调整铅垂线,使铅垂线与年画的长边平行
我国濒临的海洋中,位于热带的是(  )

A . 渤海 B . 黄海 C . 东海 D . 南海
如图,O是AB上一点,过点O作射线OC.

  1. (1) 利用尺规作图分别作∠AOC和∠BOC的平分线OD,OE(保留作图痕迹,不写作法).
  2. (2) 试判断OD与OE的位置关系,并说明理由.
读图,根据图中信息回答下题

  1. (1) 图A中②所示耕地类型是,该地区的降水量范围是(  )

    A . 水田,多数大于1600毫米 B . 水田,大于800毫米 C . 旱地,400﹣800毫米 D . 旱地,800﹣1600毫米
  2. (2) 土地利用类型③适合发展的农业部门是(  )

    A . 林业 B . 畜牧业 C . 种植业 D . 渔业
  3. (3) 根据图C判断,东莞市所属的温度带和该温度带作物熟制是(  )

    A . 暖温带,一年一熟 B . 亚热带,两年三熟 C . 亚热带,一年两熟到三熟 D . 热带,三年两熟
判断下列句子是否符合你听到的短文内容
  1. (1) I will spend the "Lunar New Year" in 2050 on the moon.
  2. (2) "Lunar" means "something to do with the earth".
  3. (3) The first prize is a trip to the moon at the Spring Festival for the winner.
  4. (4) The first space tourist is a rich businessman who paid millions of dollars to take a ride on a rocket.
  5. (5) In 2050, common families like mine can have the chance to take holidays in space.
  6. (6) The first branch of McDonald's will be open in 2050.
如下图,根据观察到的现象可知,在汽车的运动突然(填“变快“或“变慢”)时,乘客由于向前倾.

美是一种感觉,当人体下半身长与身高的比值越接近0.618时,越给人一种美感.如图,某女士身高165cm,下半身长x与身高l的比值是0.60,为尽可能达到美的效果,她应穿的高跟鞋的高度大约为(   )

A . 4cm B . 6cm C . 8cm D . 10cm
Read the passage and choose the best answers. (根据短文内容,选择最佳答案。)

Washing the Apples

Mrs. Smith has a shop in the town. There are all kinds of fruit in her shop. She's friendly to the customers and never fools anyone. So the customers like to buy fruit in her shop, and she gets more and more money.

One day, the apples she sold were all fresh and nice. She remembered her son Steve liked them best, so she brought some home for her son. After lunch, she went out and left the apples on the table. That afternoon Steve came back from school, he felt very hungry. He looked for something to eat and found some apples on the table. "Great! They are my favorite. " he cried and ate a lot. Mrs. Smith got home after she closed her fruit shop. When she saw Steve, she asked him, "Did you have the apples?" Her son answered, "Yes. And I ate lots of them. " "Did you wash them?" Oh, I forgot. I was too hungry. What should I do? "

A few minutes later, Mrs. Smith found her son kept on drinking water.

"Are you thirsty? Why are you drinking so much water?" asked the mother.

"No, Mom." answered the boy, "I want to wash the apples in my stomach with the water."

  1. (1) What shop does Mrs. Smith have?
    A . A clothes shop. B . A food shop. C . A fruit shop. D . A book shop.
  2. (2) What's Steve's favorite fruit?
    A . Oranges. B . Pears. C . Bananas. D . Apples.
  3. (3) Where did Steve find the fruit?
    A . On the table. B . In the basketball. C . In the kitchen. D . In his bedroom.
  4. (4) Why did Steve keep on drinking water?
    A . Because he was very thirsty. B . Because he wanted to wash the apples in his stomach. C . Because he liked drinking water. D . Because he was very hungry.
  5. (5) Could he wash the apples in his stomach with the water?
    A . Yes, he could. B . No, he couldn't. C . Sorry, I don't know. D . Yes, I think so.
四大盆地中位于第一阶梯的是(  )
A . 四川盆地 B . 柴达木盆地 C . 准噶尔盆地 D . 塔里木盆地
如图所示,画出两条光线经凸透镜折射后的光路图。