A. On Birch Street. B. On Daisy Road. C. On French Avenue.

　　听第10段材料，回答第18至20题。

　　18. What is the subject of the talk?

　　　A. Earth's biology. B. Astronomy. C. Earth's history.

　　19. What did the speaker mention in the previous lecture?

　　　A. The origin of the earth.

　　　B. The development of the moon.

　　　C. The formation of the Atlantic Ocean.

　　20. What will the speaker do next?

　　　A. Show a video.

　　　B. Talk about the oceans.

　　　C. Show the students a globe.

第二部分 阅读理解（共两节, 满分35分）

第一节（共10小题；每小题2.5分，满分25分）

阅读下列短文，从每题所给的A、B、C、和D四个选项中，选出最佳选项。

　　A

　　According to a recent report, about 15% of the people in the UK are members of gyms. But are they more likely to be fit?

　　A study found that gym members were 14 times more active than people who didn't belong to any health club. Gym members did six hours more exercise a week, and this activity did make them fitter than non-gym members. They also spent less time sitting down every day than non-gym members. The results were the same for men and women.

　　The study included 405 people between the ages of 30 and 64, and the main characteristics of those who were gym members were the same as those who were not. "But gym members did more training than non-gym members," said the lead author, Elizabeth Schroeder of the University of Illinois.

While it might seem clear that gym members exercising more are healthier than non-members, Schroeder says this has not been directly shown before. However, the study is only designed to show a tie between gym membership and more exercise. It may be that active people like to join gyms. In the study, people who exercised as much as gym members were also in good