*Question*
I'm taking a test and have to guess the right answer to the question after the article. Article: Broken rubber bands and flat tires requiring replacement could soon be a thing of the past. French researchers have developed a new kind of rubber that can repair itself when broken.The new rubber is made from widely available materials including vegetable oil and a common industrial chemical.All the materials are considered safe to the environment and can be easily reused. The best part is that the new rubber can be repaired and used again and again without losing its strength or ability or stretch.When cut, the rubber can be made new again, simply by pressing the two broken ends back together. The product can be repaired at room temperature, around twenty degrees Centigrade;other self-healing materials require higher temperatures for repair. Traditionally, rubber substances are made from huge molecules connected by strong chemical links, or bonds.The new rubber is made of smaller molecules.The molecules are linked together using hydrogen bonds.When connected in this way, the molecules act like one long molecule, forming what is called supramolecular networks .When the rubber is cut, the molecules attempt to connect with whatever molecule is near them.When pressed together, the molecules are able to repair themselves at the molecular level, making the repaired rubber like new. However, time is an important element in the process.If the broken ends are not brought together quickly, a repair is not possible.This is because molecules will form bonds with molecules on their own side.The inventors say the surfaces of the rubber can be repaired within a week of being separated. The rubber is the creation of scientists at the Industrial Physics and Chemistry Higher Education Institution in Paris.The organization is part of France's National Center for Scientific Research.The new material is described in greater detail in the research publication Nature. Question: According to the introduction, which of the following is NOTthe advantage of the new rubber? Options: A: It can be made as easily as common rubber. B: It is environmentally-friendly. C: It can repair itself at room temperature. D: It is made of smaller molecules.
**Answer**
D

*Question*
I'm taking a test and have to guess the right answer to the question after the article. Article: A public primary school in New York City has stopped giving its students homework. P.S.116 Principal Jane Hsu wrote a letter to parents last month explaining that after more than a year of analyzing studies,the school had concluded that students'after-school time would be better spent on activities like reading at their own pace and playing rather than working on homework. Hsu's letter says that many studies indicate that there is no connection between homework and academic success.Indeed,there are some studies that show that the link between homework and success is doubtful at the primary school level. An important 1989 study on homework by Professor Cooper found that doing homework led students to perform better in school as they grew older.In later grades,students who did homework performed increasingly better than students who did not.In 2006,Cooper published a study that analyzed 15 years'worth of data on the effectiveness of homework.He found that homework had a more positive impact on students as they aged,and identified stronger relations between homework and achievement for students in grades seven through 12 than for students in kindergarten through sixth grade. A 2012 study from the Indiana University School of Education on 10th-graders found little relation between time spent on homework and better course grades,although it did find a positive relation between homework time and standardized test performance. Some parents of P.S.116 students are not happy with the decision to _ homework. "I think they should have homework--some of it is about discipline.I want(my daughter)to have fun,but I also want her to be working towards a goal,"Daniel Tasman,the father of a second--grader at the schoo1. "You have to do homework in order to gain;you have to do homework because they may not be able to comprehend everything in school,"Sharon Blake,a grandmother of a P.S.116 student. Question: Harris Cooper found in his research that  _  . Options: A: kindergarten students spent too much time doing activities B: doing homework made the kindergarten students cleverer C: only elderly students should be given homework to do D: students benefit more from doing homework as they grow older
**Answer**
D

*Question*
I'm taking a test and have to guess the right answer to the question after the article. Article: For children with cancer ,the facts of life include the facts of death. There is always the fear that they might not live to grow up.Yet they realize that fighting cancer is the only way of beating it. So they fight.And sometimes, they win.It may take years.It certainly takes support from  parents and doctors. Unfortunately, many parents can't deal with their child's illness.And doctors, no matter how caring, have other patients to care for. At times like these, the Children's Cancer Foundation can help. We are a group of Hong Kong doctors, nurses, psychologists, parents of children with cancer and concerned persons  .All of us are volunteers (offer one's help  without payment).We're with the children every day, listening to, and encouraging them. We also advise parents, educate the public and send doctors overseas to study new cancer treatments. Our funding (providing money) has brought better equipment to the wards (large rooms of a hospital), and paid for special flats  where the children can recover. We want to do even more.But to do it, we need your help. It will be money well spent.One who looks at our past achievements should prove that. To the children, your contribution  will also be a show of support.A sign that you're behind them is just the sort of news that a six-year-old chlid with cancer needs to hear. Question: This passage is likely  _  . Options: A: a story B: an advertisement C: a report D: diary
**Answer**
