Exercise: You are going to listen to a passage about the
effect of jet lag. Listen carefully and then choose the best answer to each of
the following questions. Remember you will hear the passage only
once.
According to the report, why did researchers study jet lag in baseball
A. Because they think people are usually very interested in sports.
B. Because they are not interested in how jet lag affects
businesspeople.
C. Because baseball teams want to know how to win more games.
D. Because it is difficult to measure how jet lag affects other types of
travelers.
