You may think that inventions are far away from your everyday life. But in fact, almost everyone can invent. It's just that they do not recognize that their idea could be the start of an invention. Once inventors see their ideas have some practical value, they don't let them slip away. For example, the inventor of the dishwasher, American Josephine Cochrane, loved to give dinner parties. But she found it took too long to wash her dishes by hand and too many of them broke. She decided that a machine could do the job faster and with fewer mistakes. So, in 1886, she set out to make one for herself. Like Cochrane's, most inventions are created to solve a problem. So, the first and most important step is to find the problem. You can start by looking at what is wrong with things you use now. You can ask grandparents or neighbours if they remember ever saying: "I wish someone would invent something for..." Or you can look at people in different areas such as on the street, or at school. Then you might notice situations or things in need of improvement. Remember to record your ideas and work. This will help you develop your invention and protect it when it is completed. The next step is to think about possible solutions. An invention is a new way of solving a problem. So think of many, varied, and unusual ways. You can often come up with a solution for a problem by looking at it from a different angle or thinking about it in a new way. Example 1 -- instead of thinking of shoes as protecting your feet from the ground, think of using something to protect the ground from your feet. Example 2 -- instead of thinking about how you can carry oranges home from a store, think of how they can come to you by delivery or growing your own. Example 3 -- instead of experimenting with only one solution, can you put two or three solutions together, or arrange them in different orders? And if one solution doesn't work, can it be put to other uses? That was how yellow post-it... The main idea of this story is _ . A) how to put your ideas to other uses B) that you can invent and how you will be able to do so C) problem-solving technique D) how inventors invent
B

When many of us take a vacation, more than anything, we seek to relax. We spend long, lazy days on a beach chair or in a hammock . But too often, we return home, very very tired. It doesn't have to be this way. Come home _ after an active trip! And you won't be too tired! Active vacations are often the most relaxing ones of all. We don't expect you to take up jogging or backpacking. Rather, we ask the sedentary vacationers to spend two to four hours a day doing things, such as walking in city streets, going to a zoo or biking beside the ocean. These kinds of activities aren't just good for your physical health. They improve your mental health and even your spiritual health. And they make vacations memorable and worthwhile. Here are some fresh ideas to make your vacations as pleasurable as they are active and healthy. *A walk at dawn or dusk can make you feel or look young again. Try to make this a daily thing that is done regularly. *Don't allow yourself to spend all your time sitting in front of the water. *Many of us spend a large part of our vacations on the road, either getting to and from our destinations, or using the car for sightseeing. But no matter how beautiful the scenery is, great memorable vacations don't happen in a car seat. What is the purpose of the passage? A) To introduce the relationship between vacations and health. B) To show us how to make our vacations relaxing. C) To tell us where we should go for our vacations. D) To explain to us why vacations can sometimes be boring.
B

Knowing the best way to study will help you to be a better student. By using your time properly, you can do your homework more quickly. Learning to study is not difficult. The first thing to remember is that you must be willing to learn. It doesn't mean that you must always like the subject. It does mean, however, that you must be willing to do whatever is necessary to learn. Try to understand why it is important and how it will help you now and later to do and learn other things. Knowing mathematics facts will be useful in your whole life. Knowing how to spell makes any kind of writing easier. Sometimes the subject that you think is going to be uninteresting will be exciting when you begin to work at it and understand it more clearly. Learning things can be fun if you are willing to work with them. Here's some advice for you: have a certain time each day and a quiet place with good lighting for study, so that you can concentrate on your study without interruptions; have everything ready before you sit down to study, a dictionary, paper, a pen and books; be sure you understand what you should learn before you start; read carefully and pay special attention to the most important things; when memorizing, first find out the main parts and then recite the whole thing; check your homework after you finish it; never forget the importance of review and preview. Don't try to spend a lot of time researching learning methods. There are many students who know many good learning methods but don't study well. They forget that the most useful learning method is to study hard. From the passage, we can conclude that _ . A) No pains, no gains B) Better late than never C) Study comes first D) Good methods, good results.
A