Scientists study the world and learn about things using a process called the scientific method(方法). By asking important questions and   16  the answers, it is possible to make amazing discoveries! Sometimes a scientist is   17  to answer his own questions, but if he has taken good notes another scientist may come along later who is able to use new knowledge to answer it.
When you use the scientific method to   18  an experiment, you start by making observations(观察) about something that  19  you. Based on your observations, you make a hypothesis. This is using  20  you know to make a smart guess about what you think could happen. Then you are ready to begin your experiment. All   21  your experiment you take down notes, which are   22   experiment date(资料). You are constantly making observations during this time. You may make discoveries that cause you to improve your experiment as you go.   23  , you conclude your experiment and begin to look over your notes to decide what it all means. Based on what you have learned, you make a final statement about   24  your hypothesis was correct or not. You have to have reasons and evidence to support what you are saying.
Using the scientific method can be difficult, but rewarding. Because all the steps are organized in a process, the   25  are more valid(可信的). When you provide observations as evidence to support what you are saying, your ideas are more likely to be accepted.

If you are studying English, the Language Study Fair (游乐会)that is being held this month will certainly attract you. The fair is going on between the 28th and 30th of June at the National Education Centre. It is held to answer all your questions about self-study no matter how your English is.

The Language Study Fair gives a very good chance for you to see and to get all kinds of information to help you improve the way you study. Over 350 producers of educational materials (材料)will be at the fair. Come along to this, and you won’t waste your money in the future on materials that are out-of-date, or books that you just don’t need.

We’ve got lots of different things for you to see and hear. There will be stands (展台)showing different kinds of self-study textbooks and talks by educational speakers on the best ways to study by yourself. We’re sure you’ll also enjoy watching people using the latest computer programs to make studying English alone so much easier. This is for you to make good decisions about what to buy. You can come to the fair from nine thirty to five. Tickets cost ￡5 each, or ￡3 if you’re a full-time student. All tickets can be booked by ringing the ticket hotline. The number is 9847711.

So, we hope to see you there!

1.Who will go to the Language Study Fair?

2.What will attract those who go to the Language Study Fair ?

3.What will you buy if you want to make studying English much easier?

4.What is the opening time of the fair ?

5.How can you get a ticket for the fair ?

1— We plan to go out for a picnic next weekend. Would you like to come along?

          — ______. It’s my favorite.

A. Enjoy yourself                   B. It doesn’t matter

C. You’re welcome                  D. That would be very nice

 We need to __________a plan about what to do on Clean-up Day.

    A. come up with    B. come over     C. come along     D. come out