单项选择题

Humans on Earth today are characterized by ______.

A．their existence as free and separate beings
B．their capability of living under favorable conditions
C．their great power and effectiveness
D．their strong desire for living in a close-knit society

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热门试题

单项选择题

The passage is mainly concerned with ______.

A．the feasibility of life existing on other planets
B．the description of Mars's physical environment
C．the comparison between the physical features of Mars and the Earth
D．the feasibility of men's migrating onto Mars

单项选择题

What is the typical trend of businesses today

A．To take in more foreign funds.
B．To invest more abroad.
C．To combine and become bigger.
D．To trade with more countries.