如题所述
The
main idea of a passage or reading is the central thought or message. In contrast
to the term topic, which refers to the subject under discussion, the term main
idea refers to the point or thought being expressed. 中心思想是文章的观点和思想而话题是文章讨论的主题
The United States faces a transportation crisis. U.S. highways and
airways are getting more and more crowded. In the next 20 years, the time that
automobile drivers lose because of crowded highways is expected to increase
from 3 billion to 12 billion hours a year. During the same time period, the
number of airplane flights with delays of more than eight minutes is predicted
to triple. For both highway and air travel, the estimated cost of delay to
passengers will rise from $15 billion a year today to $61 billion 20 years from
now.
分析 答案B A main idea有观点increasing,topic 就是文中主题
Which sentence best states the main idea of the paragraph?
A. Airplanes will not be delayed as much as cars will be.
B.Transportation problems in the United
States are increasing.
C.Twenty years from now, drivers
will be delayed 12 billion hours a year
D.Transportation delays now cost travelers
billions of dollars
Which is the topic of the paragraph?
A. Transportation Problem inte U.S.
B. Crowded Highways and Airways
C. Delay of Flights
D. Cost of transportation Delay
