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

听独白,从题中所给的 A、B、C 三个选项中选出最佳选项,回答问题。
  1. (1) How many students are there in the group?
    A . Three. B . Four. C . Five.
  2. (2) How often does the writer eat vegetables?
    A . Every day. B . Sometimes. C . Hardly ever.
  3. (3) Why does Tom sometimes eat fruit?
    A . He loves it. B . He thinks it's good for his health. C . His mother wants him to eat it.
  4. (4) Who is a little heavy?
    A . Tom. B . Mary. C . Bill.
  5. (5) Why does Mary sometimes go to bed late?
    A . Because she likes reading books. B . Because she likes watching T V. C . Because she enjoys using the Internet.
Take exercise one hour a day, and you'll become (healthy) than before.
一个正n多边形的内角和是它外角和的2倍,则n=
近年来,长江洪灾频繁发生,其主要自然原因是( )
①中游地区围湖造田 ②中下游地势低平 ③流域内降水丰沛 ④上中游砍伐森林,破坏植被 ⑤支流众多,雨季涨水集中

A . ①②③ B . ②③④ C . ②③⑤ D . ①③⑤
结合想象,用自己的语言写出《敕勒歌》所描绘的画面。

阅读下列材料:通过小学的学习我们知道,分数可分为“真分数”和“假分数”.而假分数都可化为带分数,如: .我们定义:在分式中,对于只含有一个字母的分式,当分子的次数大于或等于分母的次数时,我们称之为“假分式”;当分子的次数小于分母的次数时,我们称之为“真分式”.如: 这样的分式就是假分式;再如: 这样的分式就是真分式.类似的,假分式也可以化为带分式(即:整式与真分式的和的形式).如: ;再如:

解决下列问题:

  1. (1) 分式 分式(填“真分式”或“假分式”);
  2. (2) 把假分式 化为带分式的形式(写出过程);
  3. (3) 如果分式 的值为整数,那么x的整数值为
1976年《天安门诗抄》:“黄浦江上有座桥,江桥腐朽已动摇。江桥摇,眼看要垮掉。请指示,是拆还是烧?”诗中的“江桥”是指(    )
A . 林彪反革命集团 B . 党内资产阶级司令部 C . 江青反革命集团 D . 武汉长江大桥
下面图形表示绿色食品尧节水尧节能和低碳四个标志,其中是轴对称图形的是(  )
A . B . C . D .
如图,过点A(2,0)的两条直线L1、L2分别交y轴于点B、C,其中点B在原点上方,点C在原点下方,已知AB=

  1. (1) 求点B的坐标;
  2. (2) 若△ABC的面积为4,请求出点C的坐标,并直接写出直线L2所对应的函数关系式.
初春,张家界国家森林公园梅园梅花盛开,花香满园,这一现象表明(  )

A . 分子间有间隙 B . 分子间有吸引力 C . 分子间有排斥力 D . 分子永不停息地做无规则运动
下列因式分解正确的是(    )
A . a4b﹣6a3b+9a2b=a2b(a2﹣6a+9) B . x2﹣x+ =(x﹣ 2 C . x2﹣2x+4=(x﹣2)2 D . x2﹣4=(x+4)(x﹣4)
《虽有嘉肴》中说:“知困,然后能自强也。”请从你读过的一本书(《钢铁是怎样炼成的》除外)中,列举一个可以证明这个观点的事例。
如图,一列动车匀速直线通过桥的画面。已知动车长200m,桥长1300m,动车完全通过桥用了30s,则该动车的速度 m/s, 动车上的乘客通过在桥上的时间为s。

下列方法中不能使生物发生变异的是(    )
A . 化学药剂使细胞内染色体加倍 B . 利用转基因方法获得转基因超级鼠 C . 把蟹爪兰嫁接到仙人掌上 D . 利用卫星培育太空椒
根据句意及汉语提示完成句子。

  1. (1) Tom was ill. The doctor  (量体温) just now.

  2. (2)  (吃药) and you will feel better.

  3. (3) Western people like to eat  (快餐).

  4. (4) How long have you   (参加) the Party?

  5. (5) I am a  (成员) of the club.

—Who got better grades in the exam, Dale or Alex?

—Dale. He wrote         Alex.

A . as beautiful as B . as beautifully as C . more beautiful than D . more beautifully than
阅读理解

    Many of us buy things from vending machines(自动售货机). Most machines sell food and drinks. But this one is special. It sells novels.

    You can see the special vending machines in France. You can find them easily in many places such as airports, train stations and shopping malls.

    The vending machines sell lots of novels. The novels are not the same. Some are long and some are short.

    It's easy to get a novel from the vending machines. First, you need to choose your reading time: 1 minute, 3 minutes or 5 minutes. Then, a piece of paper will come out of the vending machines. Finally, take away the paper and it is the novel you want.

    Lots of young people like the special vending machines. They say the novels from the vending machines can help them pass the time. They don't want to use their mobile phones to read novels. They prefer to read novels on paper.

  1. (1) The passage is about vending machines which sell_________.
    A . food B . drinks C . water D . novels
  2. (2) You can see the special vending machines________.
    A . in China B . in America C . in France D . in Italy
  3. (3) When you want to buy the novel from the vending machines, the first thing you need to do is________.
    A . to choose your reading time B . to put the coins inside C . to turn on your mobile phone D . to put a piece of paper inside
眼睛能看见物体,是因为物体在视网膜上形成清晰的像,这种成像与下列原理相似的是()

A . 平面镜 B . 照相机 C . 幻灯机 D . 放大镜
PM2.5是指大气中直径小于或等于2.5微米的颗粒物。PM2.5不易被鼻腔阻挡,被吸入人体后会直接进入人体,干扰肺部的气体交换,引发包括哮喘、支气管炎等方面的疾病。
  1. (1) PM2.5被人体吸入后对人体的系统造成影响。
  2. (2) 医生指导晨练爱好者雾霾天最好待在家里,若要外出必须戴好口罩。下表中能有效防止PM2.5的口罩是(填序号).

    口罩类型

    ①普通16层纱布口罩

    ②单层无纺布口罩

    ③N95专业口罩

    过滤孔径

    0.01厘米左右

    0.01毫米左右

    0.1微米左右

“须臾十来往,犹恐巢中饥。辛勤三十日,母瘦雏渐肥。”描绘的是鸟类的(     )
A . 防御行为 B . 繁殖行为 C . 迁徙行为 D . 取食行为