题海网，海量题库；找题库、找试卷、找答案就上题海网。

The new play is good and we all e it.

根据首字母或汉语提示完成句子

选出不同类的单词（）

分解因式：﹣2x²+4xy﹣2y²＝．

之所以说网络交往实现了古人“天涯若比邻”的梦想，是因为网络交往（    ）

读“六大板块示意图”（下图），完成下列各题。

四位学生在进行研究性学习时，以中国古代四大发明对西方历史的影响为题，各命一个小题。你觉得哪些最适宜
①造纸术——中华文明的传承者
②印刷术——文艺复兴和宗教改革的推动者
③火药——荡平欧洲封建城堡的致命武器
④指南针——西欧海外殖民的助跑器

以下关于生命的说法中，正确的是（    ）

①每个人的生命都是独一无二的，都有自己独特的风格和特点     ②要珍爱自己的生命和别人的生命

③地球上的生命是人类社会长期发展的产物                              ④要热爱大自然这个生命的家园，保护环境，维护生态平衡

—他叫什么名?

—他是迈克·米勒。

—is name?

—He is Mike Miller.

如图，在 中， ，过A作 于点D，点E为直线 上一动点，把线段 绕点E顺时针旋转 ，得到线段 ，连接 、 ，直线 与 相交于点G.

小明、小华和小芳三个人到文具店购买同一种笔记本和钢笔，他们把各自购买的数量和总价列成了表格．聪明的小明发现其中有一个人把总价算错了，这个算错的人是．

	小明	小华	小芳
笔记本(本)	15	24	27
钢笔(支)	25	40	45
总价(元)	330	528	585

glasses

在下列事例中，物体受到平衡力作用的是(   )

When I got home, I found my mother (cook) in the kitchen.

如图①②③表示人体细胞间信息传递的三种方式．下列描述错误的是（　　）

点P在第二象限内，点P到x轴的距离是6，到y轴的距离是2，那么点P的坐标为（　　）

阅读理解

    "Please take my penny," said Maggie to old Dan, the fisherman, who sat on a bench repairing his nets.

    Her brother Andrew drew her back, whispering, "Maggie, he is not a beggar (乞丐)!"

    But Maggie paid no attention. "Please take it," she said again. Old Dan smiled, and took it. "Thank you, little miss," he said, "It is kindly meant."

    After that, Maggie went to the beach to gather shells. She never thought how fast the hours were passing until being tired. She sat down on a rock. Soon she was scared because the sea water was going up. She wanted to go home, but she found the places she had gone down easily very difficult to climb up. The stones were wet and smooth. What could poor Maggie do? She felt sad and cried.

    Luckily, Dan's large dog Rover jumped down from a rock! Rover raised his loud bark. The fisherman had taken his nets to the top of the cliffs (悬崖), and was laying them out in the sun when he heard the loud barking of a dog. He felt sure that it was Rover, and Rover was in trouble, so he looked over. There he saw it all.

    "Bless her! It is the little one that was so kind-spoken to me this morning!" he cried, and he hurried to his sons' rooms.

    "Quick, boys, quick!" he said. "Get to the boat, and row fast to the sea. There is a poor child there just waiting to be helped." The fishermen lost no time, and soon little Maggie and Rover were rowed safely to land! Old Dan was waiting there to lift her out to give her into her mother's arms.

    "It was the penny that did it, madam," he said to Mrs. Weston later. "I saw Rover looking at her when she put the penny. And I am thinking he had been looking after her all the day."

    Some years later, Rover came to Maggie's home with a little note, in which was written—"Will Maggie help Rover?—his master is dead."

用竖式计算，并验算。

到原点的距离不大于3的整数有 个，它们是： 。

有位化学教师在实验室取用生石灰时，发现装满生石灰的塑料试剂瓶已经膨胀破裂（如图）。某化学兴趣小组的同学在该老师的指导下，对该生石灰样品开展了以下探究活动。

（提出问题）生石灰样品的成分是什么？

（作出猜想）生石灰样品的成分可能是CaO、Ca（OH）₂和CaCO₃中的一种或几种。