16. What can we learn from the conversation?

A. The dog can't get lost.

B. The dog is stolen by someone.

C. The dog knows the way around the lake.

听第10段材料，回答第17至20题。

17. Who is the woman probably phoning?

A. The health department.

B. The repairman.

C. The landlord.

18. What is the woman complaining about?

A. The heater in her room is going to break down.

B. Her room doesn't have a heater.

C. Her room is too cold.

19. What day is it when the heat is gone again?

A. Wednesday. B. Friday. C. Monday.

20. What does the woman want Mr. Tyler to do?

A. Repair the heater next Monday.

B. Repair the heater right now.

C. Complain to the repairman.

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，从每题所给的四个选项（A、B、C和D）中，选出最佳选项，并在答题卡上将该项涂黑。

　　Crossing your legs is an extremely common habit. While you may find it comfortable to sit with one knee crossed over the other, it might be causing health problems that you are not aware of.

A study published in Blood Pressure Monitoring stated that sitting with your legs crossed can increase your blood pressure. The reason is that crossing one leg over the other increases resistance, making it even harder for the blood to circulate and