outside?

------I know, but my parents are expecting me.

A. should B. must C. will D. won't

10. Today, if you find something useful on the Internet, you can download and _______ it in your personal computer file.

A. save B. spare C. share D. turn

B组练习

一． 阅读短文（P59，Workbook）,回答下列问题。

1. Why did people believe the programme Panorama on April 1st, 1957?

2. Why did people believe the story?

3. What are the two reasons mentioned in the programme for the good crop?

二．阅读理解。

　The most important use of drifting(漂流) bottles is to find ocean currents. When the position and direction of currents are known, ships can use the forward movement of a current or stay away from currents that would carry them off their course. Benjamin Franklin was one of the first to use bottles in the study of currents. He wondered why British ships needed a week or two longer than U.S. ships needed in order to cross the Atlantic Ocean. Franklin thought the Gulf Stream(墨西湾流) might explain this difference.

Franklin talked with captains of U.S ship. He found that they knew each turn of the Gulf Stream. They used the current in every possible way. From his talks with the captains, Franklin made his first map of the Gulf Stream. Then he checked his map by using sealed(密封的)bottles. The map that he finally made is still used, with only a few changes, today.

6. Why are drifting bottles used?

A. To determine the position of a ship B. To find the direction of a current.

C. To predict the direction of a ship D. To carry message across the ocean.

7. What led Franklin to talk with U.S captains?

A. U.S ships were longer than British ones.

B. British ships could sail the Atlantic faster than U.S ones.

C. U.S ship could sail the Atlantic faster than British ones.

D. U.S captains knew more about maps.

8. How did Franklin make the map?

A. By traveling across the Atlantic Ocean. B. By traveling across the Gulf.

C. According to the talk with U.S captains. D. By using sealed bottles.

9. What did Franklin do to check his map?

A. He compared his own map with other maps. B. He asked U.S captains to help him.

C. He put bottles in the sea to check his map. D. He scaled some bottles.

10. The underlined word current in the first paragraph means _________.

A. a stream of water B. the direction of the course

C. the direction of a ship D. the situation of the