题海网，海量题库；找题库、找试卷、找答案就上题海网。

伴随道安高速的通车，遵义全面实现了县县通高速的目标，步入“高速时代”。正安至贵阳相距280km，一辆质量为400kg，车轮与地面的总接触面积为800cm²的轿车，丛正安到贵阳用时2小时48分，则轿车行驶的平均速度为km/h，该轿车静止时对水平地面的压强为Pa。（g取10N/kg）

假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。

增加：在缺词处加一个漏字符号（∧），并在其下面写出该加的词。

删除：把多余的词用斜线（＼）划掉。

修改：在错的词下划一横线，并在该词下面写出修改后的词。

注意：1）每处错误及其修改均仅限一词；2）只允许修改10处，多者（从11处起）不计分。

    Cherry, whom is about 5 or 6 years old, is my favorite pet. About three years before, Cherry showed up at our house. I have just lost my cat and was very sadly, so I didn't plan to owning another pet. At first, we ignored her. We were getting ready leave for a vacation. My two daughter kept wanting us to keep her and fed her behind my back. Finally I had to tell them if he was still here when we got back, we would keep her. I was sure a dog would move on. Guess what? When we got back from vacation, but the dog was still around. It seemed like an angel had send her to us.

如图1，已知四边形ABCD是正方形，点E，F分别在BA，AD的延长线上， ，BF交CD于点O，ED的延长线交BF于点G，连接CG.

下列属于遗传现象的是（    ）

阅读理解

    Most people celebrate their birthdays by holding parties and getting gifts. However, Sydney Coney, 10, chose to give up her birthday for a day of service. She turned into a cook to help the homeless people at the Firehouse Shelter(避难所). She called it a birthday gift to herself.

   Sydney came up with the idea after listening to a story. It was about the spirit of giving. Soon after, she decided to cook for the homeless(无家可归的人)on her upcoming birthday. She even used her birthday money to pay for the food.

   On her birthday, Sydney arrived early at the shelter to cook a hot meal for over 200 people with the help of her family and friends. They all wore T-shirts with the words "Sydney's Hands to Serve, and Heart to Love".

    "It is hard to work in a homeless shelter," said Anne Rygiel, director of the Firehouse Shelter. "Seeing a kid like Sydney, however, let me know that everything will be OK. She gives me hope for our future."

    "It makes me feel happy to bring a smile to someone's face. I don't think this will be the last time. It's now a birthday tradition for me. I will never stop helping others," Sydney said.

   Sydney's act of kindness inspired others to help as well. Her family, neighbors and teachers gave away money, food, clothes and some other things.

Once you master the useful skills, everything in your life will change for                      .

某市物价局主持召开了城市居民管道天然气价格改革听证会，就城市居民管道天然气价格改革方案进行了公开听证。各位代表在会上畅所欲言，就城市居民供气价格改革这一议题提出了自己的意见和建议。该市物价局的这一举措（    ）

①有助于决策充分反映民意，体现政府决策的科学性

②有利于公民对决策的理解，直接行使决策权

③推动了公民积极参与政治，体现人民民主的真实性

④有助于公民进行民主监督，增强公民的社会责任感

利用光的现象或原理填空

a．照相机镜头镀的一层膜是利用了光的原理

b．海市蜃楼是光的现象

c．光纤通信是利用了光的原理

d．人们眯起眼看灯丝时会看到彩色条纹，这是光的现象．

与细胞增殖和分化有关的图解如如图所示，据图回答下列有关问题：

雾霾天气，快速行驶的B车司机看见不远处的A车后立即刹车，由于仍撞到A车，造成“追尾”事故，(如图所示)，若B车相对于A车质量重一些，那么B车具有的惯性（选填“大于”“小于”或“等于”）A车具有的惯性。

如图， 是 的直径，直线 与 相切于点A，直线 与 相切于点B，点C（异于点A）在 上，点D在 上，且 ，延长 与 相交于点E，连接 并延长交 于点F.

将三角形向左平移4个格。

假设你是某大学的学生李津，你校英语俱乐部将选举新一届副主席，负责规划、组织俱乐部的相关活动。你想报名参选。请根据以下提示，写一篇竞选演讲稿。

1）个人优势介绍(如性格、特长等);

2）组织校内活动的设想(如举办讲座);

3）组织校际交流活动的设想(如举办辩论赛);

4）表达当选的愿望。

注意:

1）词数80左右;

2）请勿提及真实学校名称;

3）可适当增加细节，以使内容充实、行文连贯;

4）开头、结尾已给出，不计人总词数。

参考词汇:

副主席vice president

竞选run for

Good afternoon, my dear friends,

My name is Li Jin.

Thank you.

读图回答

I'm sorry to know that he got (可怕地) hurt in the traffic accident.

我国河湖众多，长江、黄河被誉为“母亲河”。结合所学，分析回答问题。

一份对1842年英国曼彻斯特的调查报告提到：“手织工……每天干14小时活，挣的钱还不够吃两顿饭”。1844年对全英国所做的一项调查显示，织袜工平均每台织机每周收入10先令，扣除租机费后只有6先令，且衣食住行都包括在内。这两份调查所揭示的社会现实（   ）

如图所示的电动螺丝刀，其前端的磁性托架可以固定螺丝；内置LED灯，方便在光线不足的环境中使用。这主要体现了设计的（  ）

深圳某地铁站入口有A，B，C三个安全检查口，假定每位乘客通过任意一个安全检查口的可能性相同．张红与李萍两位同学需要通过该地铁入口乘坐地铁．

自行车骑得太快，容易造成交通事故，这是由于（   ）