听一段材料，回答下面几个小题。Who is the speaker?
A. A park manager.
B. A tourist guide.
C. A restaurant owner.What is the speaker mainly talking about?
A. A historic tree.
B. A well-known park.
C. A famous commander.What do we know about the Washington Elm?
A. It was less than one hundred years old.
B. It was much older than people had thought.
C. Washington couldn't have taken command under it.What can we learn from what the speaker said?
A. The Washington Elm was attacked by insects.
B. Washington commanded the army on his knees.
C. The Washington Elm was destroyed before the celebration.
听一段材料，回答下面几个小题。Why will the woman be late?
A. She didn't catch the train.
B. She didn't finish her paper.
C. She didn't wake up in time.Where is the man?
A. At the station. B. At home. C. At the office.What is the probable relationship between the two speakers?
A. Teacher and student.B. Parent and child.C. Husband and wife.
听一段材料，回答下面几个小题。What is Mr. Chester doing?
A. Telephoning someone.
B. Speaking to the woman.
C. Leaving the man a message.What is the man's last name?
A. Oliver.B. Horst.C. Robert.
听一段材料，回答下面几个小题。How often does the man exercise at the gym?
A. Every day. B. Every two days. C. Once a week.Where will the two speakers meet before doing exercise this Friday?
A. At the park. B. At the cafe. C. At the cinema.
听一段材料，回答下面几个小题。When does the woman usually get home from work?
A. About 6:30. B. About 7:30.C. About 8:30.What did the woman do last night?
A. She watched TV.
B. She recorded a program.
C. She prepared for a lecture.
听一段材料，回答下面几个小题。Which can best describe a tension headache?
A. It occurs repeatedly.
B. It lasts over a month.
C. It causes severe pain.Which is a symptom of tension headaches?
A. Loss of consciousness.
B. Increased blood pressure.
C. A pain at the back of the head.What is the cause of rebound headaches?
A. Stressful events.
B. Tension in the muscles.
C. Too much use of pain medicine.(http://www.171english.cn)Why is a headache diary helpful for the treatment?
A. It helps one find the cause of his headaches.
B. It reminds one to take medicine on time.
C. It helps remove constant pain.