According to the passage, insect societies______.
A. are governed by the instincts of insects
B. are not fundamentally different from human societies
C. are composed of individuals of the same type
D. are as not warlike as human beings
【C2】
A. dashing
B. strolling
C. jogging
D. roaming
The author gives many examples to criticize Americans for their______.
A. cultural self-centeredness
B. casual manners
C. indifference towards foreign visitors
D. arrogance toward other cultures
According to the passage, the absolute brightness of a Cepheid variable______.
A. depends upon its measurable distance from an observer on earth
B. may be determined from the length of its cycle of variation
C. changes from time to time according to a regular and predictable pattern
D. indicates the strength of the gravitation force exerted by the star
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