单项选择题

The author's overall point is that ______.

A．primitive language may be large, complex, and complicated
B．primitive language may be large, complex, and logical
C．primitive language may be large, old, and logical
D．primitive language may be similar to pidgin English

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单项选择题

The main idea of this passage is that ______.

A．although rats are affected by overcrowding, people are not
B．data from experiments indicate that overcrowding may be an important cause of social pathology
C．the social behavior of rats is seriously affected by overcrowding
D．Calhoun' s experiments have influenced many people

单项选择题

According to the passage, which of the following is NOT true

A．Dominant males had adequate living space.
B．Dominant males were not as seriously affected by overcrowding as the other rats.
C．Dominant males attacked weaker rats.
D．The strongest males are always able to adapt to bad conditions.