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Step 3 Careful Reading Ⅰ . Choose the best answers according to the passage. 1. Yuan Longping _______ . A. is a leading scientist in industry B. was born and brought up in China C. was educated in a famous school for many years D. was given a nickname because he was very naughty 2. The only way that Yuan Longping thought to produce more rice quickly was _______ . A. to be interested in plants B. to study agriculture in college C. to begin experiments in crop breeding D. to cross different species of rice plant 3. Please choose the RIGHT order of the following events about Yuan Longping. a. Yuan Longping’s rice was exported to other countries. b. The results of his experiments were published in China. c. He studied agriculture in college. d. The government supported his research group to develop the new system of rice. e. He began experiments in crop breeding. A. c, e, b, d, a B. e, b, d, a, c C. b, c, d, a, e D. e, c, b, d, a 4. The results of Yuan Longping’s experiments were first published in _______ . A. 1960 B. 1966 C. 1970 D. 1990 5. Yuan Longping searched for a special type of rice plant which had to be _______ . A. male and sterile B. male and fertile(可繁殖的 ) C. female and sterile D. female and fertile Ⅱ . Sentence explanation. Find out these sentences in Reading and plete the following exercises.