4.They discovered the life molecule(分子)DNA. __________

　　5.They are making a complete list of all the plants in the nature reserve(自然保护区). __________

　　Suggested answers:

　　1.She's a physicist.

　　2.He's a chemist.

　　3.He's a zoologist.

　　4.They are geneticists.

　　5.They are botanists.

　　Step 2 Fast reading

　　T:OK,so much for revision.(Show the students the title-The Student Who Asked Questions on the screen or write it on the blackboard.)This is the title of the reading passage we'll learn today.Guess what the passage might be about.(After a while of thinking,ask few students to answer it.)

　　Sa:It may be about a hard-working student.

　　Sb:I think it may be about a famous person.

　　T:Yes,maybe.Now read the passage as quickly as you can and to check your guess.Meanwhile,try to get the main idea of each paragraph.(several minutes later)

　　T:Let's see if your prediction is right.What is the text about?

　　Ss:A famous scientist-Yuan Longping.

　　T:Yes,you are quite right.Can you give us the main idea of each paragraph？

　　(Encourage some student to tell about his or her idea.)

　　Main idea of each paragraph:

　　Paragraph 1:Yuan Longping is a leading figure on the rice-growing world.

　　Paragraph 2:As a boy,he was called "the student who asked questions".

　　Paragraph 3:As a young teacher,he began experiments in crop breeding.

　　Paragraph 4:He discovered a new type of rice.

　　Paragraph 5:His discoveries have brought in great profit.

　　Paragraph 6:The yield of the new hybrid rice is much greater than that of other types of rice grown in Pakistan.

　　Step 3 Careful reading

　　T:Read the passage again and underline the new words.After that,we'll do some other exercises.(After a while)Look at the words on Page 33 in Activity 3.Match the words in the box with the definitions.

agriculture　breakthrough　breed　crop　feed　producer　publish　species　support 　　1.plants people grow for food

　　2.a very important discovery

　　3.to produce new plants or animals

　　4.to give help

　　5.to give food to

　　6.to make information known,for example,in a report or a book

　　7.someone who makes things or grows food

　　8.a type of plant or animal

9.the science of farming