important discoveries in many fields. Can you name some of them? What are their discoveries?

S1: Madame Curie studied physics and discovered radioactivity.

S2: Albert Einstein was famous for his Theory of Relativity.

S3: Alexander Fleming. We should thank him for his discovery of penicillin.

T: Wonderful. There were some other scientists who also made great contributions to the world. Today let's read a passage "Pioneers of Science".

Step II Reading (pages 24 & 25)

Ask the students to read the passage on Pages 24 & 25 and learn about some important discoveries.

T: Now turn to page 24 and look at the pictures on Pages 24 & 25. Do you know the major discoveries of the scientists in the pictures? Any volunteer?

S: Albert Einstein: the Theory of Relativity; Edwin Hubble, who discovered nebulae; Alexander Fleming, penicillin; the last picture is about one of the scientists who produced the world's first computer.

T: Good. Now do Exercise 2 and try to match the discoveries with how they were discovered.

Ask one of the students to read his answers to this exercise.

Skimming

T: Up to now you have guessed something about the scientists without reading the passage. Please read the passage to check your guesses you made just now. and try to answer the following questions.

1 How many important discoveries and pioneers are mentioned in the passage?

2 Were all their discoveries made by accident?

After the students' reading, ask two of them to answer the questions.

T: Who'd like to answer the first question?

S: Five.

T: What about the second one?

S: Not all their discoveries were made by accident. Some of them are made by chance, while some as planned.