How to Investigate (调查)
①Planning
Decide on a scientific problem to investigate
For example, a student named Mary has decided to research into how quickly sugar dissolves (溶解) in water.
Write down your hypothesis
You may already have an idea of what you expect to happen in your investigation. This idea is called your hypothesis. It may not be right! It is just an idea, though it may be based on work in science which you have done before. The aim of your investigation is to test your idea.
Decide what variables (变量) you are dealing with
Things like temperature, size, weight, and color are called variable. Variables are things you can measure.
In your investigation, you have to decide what the variables are, which ones you will keep fixed, and which you will change.
You need to change just one variable at a time. If lots of variables change at once, it won’t be a good test.
Decide what equipment you need, and in what order you will do things.
Prepare tables for your results.
②Getting your evidence (数据)
Make your measurements, and record your results
③Reaching conclusions
Look for patterns in your results
Present your conclusions
What links (关联) did you find between any of the variables? How would you explain these links?
④Checking your findings
Compare your conclusions and hypothesis
Do your results support your idea?
【小题1】What does the underlined word “hypothesis” most probably mean?| A．reason | B．result | C．method | D．guess |
| A．Temperature. | B．Color. | C．Weight. | D．Idea. |
| A．She can only change one variable at a time. | B．Some of the variables can’t be measured. |
| C．Her weight and age can be the variables. | D．The temperature of water cannot be a variable. |
| A．How to do a scientific research. | B．How to explain a scientific finding. |
| C．How to deal with a chemistry problem. | D．How to understand some chemistry knowledge. |
You may ask yourself these questions many times: What should I do with my life? Should I be a teacher, a scientist or a doctor? You may always have many ideas about that. As a middle school student, it’s time for you to choose one.
But don’t just think about your dream job. You need to work hard for it. Getting the right job for yourself is like climbing. You do it step by step before you reach the top. You need to take the necessary lessons.
Maybe you want to be a reporter. You might start by working for a newspaper. In college, you might choose a journalism major (新闻学专业) and work for a newspaper when you are free. You might work as an intern (实习生) after finishing college. As long as you work hard for your dream, you will become a great reporter one day. Then you will have more useful lessons to take and more tiring work to do.
We never stop learning. This does not just mean school education. In fact, our learning started long ago. Many things we did in middle school gave us much we will use later in our job. Joining a club, having a summer job, volunteering (志愿活动), reading—all of these are useful in the long term.
Just remember: The decisions you make now are important!
根据材料内容选择最佳答案。
【小题1】Who is the passage written for (为……写)?
| A．Parents. | B．Teachers. | C．Students. | D．Experts. |
| A．It’s too hard to make it. | B．You should do it step by step. |
| C．You need to take something necessary. | D．You must be healthy. |
| A．By giving an example. | B．By telling a story. |
| C．By asking a question. | D．By explaining (解释) reasons. |
| A．The dream job. | B．Learning. | C．Being a reporter. | D．Tiring work. |
| A．Enjoy Your Life | B．Your Dream Job |
| C．Find Your Job | D．Make Your Decision |
We all dream of taking a perfect vacation. Read the following things to learn how to plan and enjoy a good vacation.
Think about what you want. Do you want to relax?
Research. If you are visiting a quite different place, you need to learn about the culture there.
Book (预订) a ticket and a hotel. If you want to travel by plane, choose a good airline company (航空公司).
Pack (装箱). If you’re going to take a plane, make sure that you don’t put any dangerous things in your bag.
| A．It might make them feel like taking a walk in the neighborhood. |
| B．Also you should just take a common suitcase (行李箱). |
| C．Choose a place that is similar to your neighborhood. |
| D．Then you can use the Internet to do some research. |
| E．Or see a completely different place? |
| F．A bad airline company will probably give you a terrible experience. |
【小题1】Henry: How strange! I just borrowed a camera from my friend to take some photos. When it was with him, it was working fine, but now it is out of order. What should I do?
【小题2】Cindy: I have some noisy neighbors. They like drinking beer and wine until late at night and talking very loudly. What should I do?
【小题3】Sabine: I don’t know if I should help those in need. There are many negative (负面的) news reports about the trouble resulted from helping others.
【小题4】Peter: I really want to visit Harbin in winter one day, but I’m afraid I’ll never have enough money to spend on this trip. Any solution?
【小题5】Daisy: I always study hard because I want to be the first in my class. Now I get good grades but there is something wrong with my health and I often get sick.
| A．Don’t allow money to be the excuse that gets in the way of your dream. You can plan a free trip or make some money by doing a part-time job. |
| B．Exercise will help you. I suggest you go to school by bicycle or on foot. It’s good for your health. And remember study is not the only thing you should care about. |
| C．You should tell your friend about the problem. If he or she doesn’t mind, it’s OK. You can ask your friend to go to the repair shop with you. |
| D．Of course go to help! It’s true that someone hurts his helper instead of giving thanks. However, most people are thankful to those who help them when they are in trouble. |
| E．You can write a letter to them. Also, you can give a warning by sending them a copy of the local noise rules. If nothing has worked, you can call the police. |
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