听力原文:Why do teachers require their students to write a book report?
(34)
A. To know whether they read the book or whether they understand the book.
B. As a common home assignment.
C. To help improve their writing.
D. To monitor their research.
【B2】
A. lead
B. leads
C. let
D. led
听力原文:According to the research,what is the characteristic of people who are most likely to have a heart attack?
(28)
A. Humorous individuals.
B. People who had undergone treatment for blocked arteries.
C. People who did not laugh much.
D. People who had a strong sense of humor.
The author's tone in this passage is ______.
A. passionate
B. hysterical
C. humorous
D. sarcastic