Why does the author mention the commute time from Paramatta to Sydney, Australia？
A. To illustrate the inefficiency of traveling by car.
B. To compare the modes of traveling today to those used years ago.
C. To illustrate the severity of traffic congestion in cities.
D. To explain why people should still use horses to travel.
查看答案
According to Paragraph 3, people are able to communicate ideas long distances because ______.
A. they can write and read
B. they can build cities and record thoughts
C. their population tends to increase
D. they have special abilities
A．High altitude.B．The cold weather.C．High latitude.D．The food.
A. High altitude.
B. The cold weather.
C. High latitude.
D. The food.
According to Paragraph 1, which of the following is NOT true of the Canyons formation？
A. Water erosion.
B. Severe earthquake.
C. The Colorado River.
D. Continental drift.
听力原文：W: Im going to leave work early today. Theres a debate this evening at 6 oclock.
A. He is too busy.
B. He is not old enough.
C. He doesn"t have transportation.
D. He feels it doesn"t make a difference.
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