题目内容

【题目】两个完全相同的条形磁铁，放在平板AB上，磁铁的N、S极如图所示，开始时平板及磁铁皆处于水平位置，且静止不动。

a．现将AB突然竖直向上平移（平板与磁铁之间始终接触），并使之停在A″B″处，结果发现两个条形磁铁吸在了一起。

b．如果将AB从原来位置突然竖直向下平移，并使之停在位置A′B′处，结果发现两条形磁铁也吸在了一起，请回答下列问题：

（1）开始时两磁铁静止不动，磁铁间的相互作用力是________力；右侧的磁铁受到的静摩擦力的方向向________。

（2）在a过程中磁铁开始滑动时，平板正在向上加速还是减速呢？答：________。

（3）在b过程中磁铁开始滑动时，平板正在向下加速还是减速呢？答：________。

【答案】（1）吸引；右 （2）减速 （3）加速

【解析】（1）磁铁静止时，二者间的相互吸引力与静摩擦力大小相等，对右侧的磁铁来说，吸引力向左，静摩擦力向右。（2）当平板向上运动而磁铁吸在一起时，说明摩擦力减小，磁铁所受支持力减小，磁铁应处于失重状态，所以平板应向上减速运动，加速度方向向下。（3）当平板向下运动而两磁铁吸在一起时，磁铁应处于失重状态，所以加速度仍向下，故是向下加速运动。

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【题目】III. 短文改错

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限一词；

2.只允许修改10处，多者(从第11处起)不计分。

I am travelling back with my parents from seeing my grandparents then it started to snow. At first, I thought it was fun and everything looked beautifully. I was looking forward to make a snowman in the playground at school the next day, and suddenly the car drove off road and into a channel. My father called the rescue team, but they said that would be a long time before they could reach us. However, we sang songs and told stories to pass the time. Several hour later, the rescue team pulled their car out of the channel. At last, we managed to drive very slowly to home. I would never forget this experience.

【题目】选词填空

用下列词组的适当形式完成下列句子。

fast asleep vary from … to… take sb. by surprise freeze over

draw up give birth to make one’s way take notice

have a gift for burn to the ground

1. The air temperature was well below freezing, and lakes and rivers __________.

2. Having spent the whole morning climbing Mount. Tai, the family were very tired and slowly ____________ to

the hotel.

3. He was lying ____________ on the sofa; it would be cruel to wake him.

4. His heart attack was so sudden that I think even the doctors were ____________.

5. The story The Pity of Zhongyong concerns a boy who _______________ writing poetry in his childhood.

6. The outbreak of H7N9 bird flu has really made the government sit up and ___________.

7. The film If You Are the One ______________ a TV show of the same name.

8. After a heated discussion, they __________ a plan to advertise their new product nationwide.

9. The bus was ___________, and at least 30 people burnt to death.

10. The land of Changbaishan ______ in height ____ 700 metres above sea level __ over 2,000 metres.

【题目】A

The first ancient Olympic Games for which we still have written records were held in 776 BC. Coroebus won the only event at the Olympics. This made him the very first Olympic champion in history. Then they grew and continued to be played every four years. In 393 AD, the Roman emperor Theodosius Ⅰ, a Christian, announced to end the Games because of their pagan (异教的) influences.

About 1,500 years later, a young Frenchman named Pierre de Coubertin began their revival (恢复). In 1892 Coubertin first brought forward his idea to revive the Olympic Games but failed.

Two years later, Coubertin organized a meeting with 79 delegates (代表) who represented nine countries. At this meeting he got what he wanted. All the delegates at the conference voted for the Olympic Games. They also decided to have Coubertin set up an international committee to organize the Games. This committee became the International Olympic Committee (IOC) and Demetrious Vikelas from Greece was selected to be its first president. Athens was chosen for the revival of the Olympic Games and the planning was begun.

The very first modern Olympic Games opened in the first week of April, 1896. Since the Greek government had been unable to afford a stadium, a rich Greek architect, Georgios Averoff, donated one million drachmas (over $100,000) to repair the Panathenaic Stadium, originally built in 330 BC.

Since the Games were not well publicized internationally, contestants (选手) were not nationally chosen but rather came individually and at their own expense. Some contestants were tourists who happened to be in the area during the Games.

【1】What would be the best title for the passage?

A. The History of the Olympics

B. How Coubertin Set up IOC

C. The First Modern Olympic Games

D. Great Changes in the Olympic Games

【2】 Coubertin held a most important meeting with 79 delegates in______________.

A. 1500 B. 1892

C. 1894 D. 1896

【3】 Who offered money to help the first modern Olympic Games?

A. Demetrious Vikelas.

B. Coroebus.

C. Pierre de Coubertin.

D. Georgios Averoff.

【4】At the first modern Olympic Games, ______________.

A. winners were given money as prize

B. IOC invited contestants to tour Greece

C. there were no strict rules for being a contestant

D. many countries chose some athletes to compete

【题目】A

In 1995, Oseola McCarty gave a present of $ 150,000 to the University of Southern Mississippi. She wanted to help poor students. It was a very generous thing to do. But her friends and neighbors were surprised. McCarty was a good woman. She went to church. She was always friendly and helpful. But everyone in her town knew that McCarty was not rich. In fact, she was poor.

How did a poor 86-year-old woman have so much money? Oseola McCarty was born in 1908 in Hattiesburg, Mississippi. She had to leave school when she was eight years old to help her family. She took a job washing clothes. She earned only a few dollars a day. Oseola washed the clothes by hand. Then she hung the clothes to dry. She did this for nearly 80 years. In the 1960s’ she bought an automatic washer and dryer. But she gave them away. She did not think they got the clothes clean enough! At that time, many people started to buy their own washers and dryers. McCarty did not have much work, so she started to iron clothes instead.

McCarty never married or had children. Her life was very simple. She went to work and to church. She read her Bible. She had a black-and-white television. But she did not watch it very much. It had only one channel.

McCarty saved money all her life and eventually had about $250,000.When she was 86, a lawyer helped her make a will. She left money to the church, her relatives, and the university. McCarty just wanted to help others. She did not think she was a special person. But then people found out about her present to the university. She received many honors(荣誉). She even flew in an airplane for the first time! Oseola McCarty died in 1999.She was a shy and ordinary woman who became famous.

【1】Oseola McCarty gave $150,000 to the University of Southern Mississippi __________.

A. to help the poor students

B. to surprise her friends and neighbors

C. to show her generosity

D. to be a good and rich woman

【2】From the story we know ___________.

A. McCarty was born in a poor family near the University of Southern Mississippi

B. everyone was surprised because they thought McCarty had no education

C. washers and dryers brought a change in McCarty’s life

D. McCarty gave half of her money to the church and her relatives.

【3】 Which of the following is true?

A. McCarty had to work to help her family after school every day.

B. McCarty learned to read the Bible by herself in the school.

C. McCarty made one third of her money by washing and ironing clothes.

D. McCarty did not have her own family because she had no husband or children.

【4】 From which of the following can we tell McCarty lived a simple life?

A. She worked hard all her life.

B. She didn’t think she was special.

C. She didn’t have many interests.

D. She had a TV set with many channels.

【题目】如图所示是一种利用电磁原理制作的充气泵的结构示意图。其工作原理类似于打点计时器，当电磁铁通入电流时，可吸引或排斥上部的小磁铁，从而带动弹性金属片对橡皮碗下面的气室施加力的作用，达到对外充气的效果。请回答以下问题：

（1）当电流从电磁铁的接线柱a流入时，发现吸引小磁铁向下运动，则电磁铁的上端为________极，小磁铁的下端为________极。

（2）你认为这种充气泵是利用直流电好，还是利用交流电好？答案：________

（3）缠绕电磁铁用的铁芯可分为硬磁性材料和软磁性材料。硬磁性材料在磁场撤去后还会有很强的磁性，而软磁性材料在磁场撤去后就没有明显的磁性了。你认为这种铁芯最好用________材料制作。

【题目】短文改错

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。错误涉及一个单词的增加、删除或修改。

增加：在缺词处加一个漏词符号（∧），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（从第11处起）不计分。

It was the International Women’s Day. Li Hua had a good idea and tells his father that he was going to do everything to celebrate it. He asked his father to help him. First they decided to do some housework, that was always done by his mother. Li Hua cleaned the house completely while his father did some shop. Then they made a good meal, cooking fish, pork, chicken, soup but some other delicious dishes. Li Hua laid the table and set a vase full with flowers in the middle of the table. After that they hid them behind the door and waited the mother in order to give her a surprise. When his mother came back and saw the delicious food, she felt happily.

【题目】听下面一段对话，完成五道小题，每小题仅填写一个词。这段对话你将听两遍。

【题目】化学兴趣小组为探究SO2的性质，按下图所示装置进行实验。(已知：Na2SO3+H2SO4===Na2SO4+SO2↑+H2O)

请回答下列问题：

(1)装置A中盛放浓硫酸和亚硫酸钠的仪器名称分别是________、________。

(2)反应后，装置B中发生的现象是_________________________________；反应的离子方程式为______________________________；装置C中的现象是___________________________，表现了SO2的________；装置D中现象是_____________________________________________，发生反应的化学方程式为_________________________________________。

(3)装置E的目的是探究SO2与品红作用的可逆性，请写出实验操作及现象_________________________。

(4)F装置的作用是________________________，漏斗的作用是___________________________。

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