What is one indicator that elephants possess a concept of death？
A. They have been known to bury their dead.
B. They will gather around a fresh elephant corpse.
C. They sometimes seek revenge on those who kill elephants.
D. They will avoid areas where an elephant has die
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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.
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.
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