假如你是李华，你校交换生Lirida热衷于参加慈善活（charity)，你想遨请...

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处语言铕误，毎句中最多有两处。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（从第11处起）不计分。

Last Saturday, eighty students from our school pay a visit to Liaoning Science and Technology Museum.

The museum, which main task is to spread the knowledge of science and technology, covers area of 15,000 square meters. The moment when we entered the museum, the exhibition caught their attention. In the museum, we saw the latest progresses in science and technology. Moreover, we did an amazed scientific experiment by ourselves. What appealed for us most was the 4D film which made us feel we were in real events.

Though the visiting time was slight short, we gained a lot. It is so an instructive activity that we hope more will be organized in the future.

阅读下面短文.在空白处填入1个适当的单词或括号内单词的正确形式。

Modern-day robots are programmed to handle tasks that are normally carried out by humans. They are faster and 1. (accurate) than human workers and never ask for a pay rise or take breaks!

Robots are also able to work2.dangerous situations.

Researchers at the University of Arkansas in the United States say that the mobile robots which have been created already are ideal for the job of hospital attendants. These mobile robots store a 3. (detail) map of the hospital in their memory. The robots’ sensors can detect 4. (object) and quickly get out of the way. Although these robots cannot go up and down know how 5. (press)a button of an elevator.

Researchers at the a Massachusetts' university are creating the first robot 6. can  constantly change its shape according to the task it has to do. These are called  polymorphic robots. “Polymorphic” means 7. ability to take different forms. A 3D printer8.(place)inside the robot to create the desired shape. The entire process of changing forms in this manner is called the rapid printing technology which is 9. (fair) common in the car industry to produce complex 3D structures quickly. Once the robot has performed 10. (it) task, it can be melted down and recycled into another useful part by the 3D printer.

    One day, a professor entered the classroom and asked his students to prepare for a surprise test. They waited anxiously at their desks for the test to begin. The professor _______ the question papers, with the text facing down as usual._______ he handed them all out, he asked his students to _______the page and begin. To everyone’s surprise, there were no _______, just a black dot (点）in the center of the page. The professor, seeing the expression on cvciyone’s face, told them the following:

“I want you to write what you_______there."

The students, thoroughly _______,got started on the inexplicable (费解的）task At the end  of the class, the professor _______ all the answer papers and started reading each one of them aloud in front of all the students. All of them, with no _______，described the black dot, trying to explain its position in the middle of the sheet, etc. After all had been _______ , the classroom  was silent, the professor began to explain:

“I’m not going to grade this. I________ wanted to give you something to think about No one wrote about the________ part of the paper. Everyone focused on the black dot, and the same happens in our________.We have a white paper to observe and ________, but we always focus on the dark spots. Our life is a ________ given to us with love and ciur and we always ________ to celebrate: nature renewing itself tvery day，our friends around us, the job________ our bread and butter and the miracles we see evoy day.________ ,we insist on focusing only on the dark spots: the health issues that bother us. the lack of money, the ________ relationship with colleagues, the ________ with a friend, and etc.

The dark spots are very ________ compared to everything we have in our lives, but they are the ones that pollute our minds.

1.A. turned up B. handed out C. referred to D. pointed at

2.A. Since B. Until C. If D. After

3.A. turn B. shut C. open D. use

4.A. exercises B. choices C. questions D. scores

5.A. remember B. imagine C. study D. see

6.A. surprised B. confused C. curious D. displeased

7.A. marked B. finished C. collected D. selected

8.A. excuse B. way C. explanation D. exception

9.A. read B. answered C. returned D. said

10.A. also B. just C. even D. finally

11.A. big B. black C. white D. beautiful

12.A. studies B. classrooms C. colleges D. lives

13.A. enjoy B. keep C. send D. show

14.A. burden B. gift C. pressure D. lesson

15.A. reasons B. lime C. freedom D. festivals

16.A. threatens B. ruins C. provides D. changes

17.A. However B. Therefore C. Besides D. Moreover

18.A. close B. tough C. special D. strong

19.A. stay B. touch C. satisfaction D. disappointment

20.A. dark B. round C. small D. dirty

Good Postures Benefits Health

Unless you become a ballet dancer or a soldier—occupations where poor postures is easily noticed —1. However, if parts of your body s the neck, shoulders or lower back start lo cry out in pain, you may find out that your postures  go wrong.

Posture is more than just a function of the way someone stands or sits. 2. The   main health risks of poor postures arc aches and pains, which can occur right away or down the road. This discomfort may start in the neck or back, but finally it may affect the hips and knees. Those who exhibit bad posture may also be less efficient, and they are more likely to be injured when they move.

3. Physically, it can minimize the force that muscles and joints need to absorb. Moreover, it can help people appear taller and feci better about themselves. Mentally, psychology studies have suggested that people’s postures in low spirits make them look less confident and competent than others.

There are many activities in people's daily lives that can affect postures and throw the body off balance if you don’t pay attention. Examples include sitting at a desk for long periods, frequently holding a phone between the ear and the shoulder and bending over a laptop. 4.The body was not physically designed to stay in one position. If you go a long time without changing your position, it can start to stress your body’s tissues.5. If you are  concerned about having poor postures, you can turn to an expert who will show you how to do certain exercise that helps improve tight muscles.

A. you will learn the benefits of having good postures.

B. you probably don’t pay much attention to your postures.

C. Regular exercise is a good way to help form good postures.

D. Keeping good postures can benefit a person’s body and mind.

E. It is also a reflection of the body’s strengths, weakness and overall health.

F. To make up for this, you are recommended to switch positions every 20 minutes.

G.Modem people's continually looking down at a smartphone is another typical one.

    A company in San Francisco, California, has found a way to turn used plastic bottles into women’s shoes.

Every day, millions of Americans drink water and other liquids from plastic bottles. More than 60 million of them are thrown away each day. Many of the plastic bottles end up in landfills or are burned with other waste products.

A San Francisco start-up company called Rothy's, however, turns this plastic waste into environmentally friendly shoes. Roth Martin is the company’s co-founder. He explains how ihey turn plastic into soft material for women’s feet. They take the plastic, clean it, and break it down into small pieces. Then they press them through a device that makes soft fibers. Those fibers arc then combined together. This is done by a 3D machine. It is designed to reduce waste while making the shoes. The knitted stuff and the inner part of the shoe arc then attached to the shoe’s outer part, called the sole (鞋底).This outer sole is also made from environmentally friendly  material: responsibly sourced no-carbon rubber.

Rolhy’s shoes are sold online. They are flat shoes, with either a rounded or pointed toe. They come in different colors and designs. They cost either $ 125 or $ 145 per pair, depending on the design. After American actress Gwyneth Paltrow discovered them last year, the demand for the shoes grew. Martin says there is no shortage of material to fill that demand. “We’re not going to run out of water bottles any time soon. So we have a limitless supply of material, and I think that is a good sign for our future." When the environmentally friendly shoes wear out, customers can return them at no cost to a company that uses the recycled material to make other products.

For now, the shoes are only available to be shipped in the United States. However, the company says it will add international shipping in the near future.

1.How are used plastic bottles usually dealt with?

A. They are used to make shoes.

B. They are buried or burned.

C. They are changed into soft materials.

D. They are returned to factories for reuse.

2.What does the underlined word “knitted” in the third paragraph mean?

A. Combined. B. Fixed.

C. Spotted. D. Repaired.

3.Which of the following directly helped to increase the sales of Rothy’s shoes?

A. The design and color.

B. The reasonable price.

C. The star power of Gwyneth Paltrow.

D. The company's advertisement.

4.What is the purpose of the text?

A. To advertise a new kind of shoes.

B. To describe the process of making shoes.

C. To introduce a new way of recycling plastic waste.

D. To stress the importance of environmental protection.