单项选择题

Which of the followings is neither expressed nor implied in the passage as being a threat posed by man to wildlife preservation

A．The discharge of chemical wastes into streams as a result of industrial development.
B．Large -scale housing development.
C．Poor coordination of international efforts at park and refuge management.
D．Introduction of species into environments.
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单项选择题
According to the passage, the end goal of great literature is ______.
A．the recounting of dramatic and exciting stories, and the creation of characters
B．to create anew a synthesis of life that illumines the human condition
C．the teaching of morality and ethical behavior
D．to write about tragedy and despair
单项选择题
As the author sees it, one of the most important gains from the study of great literature is ______.
A．enrichment of our understanding of the past
B．broadening of our approaches to social problems
C．that it gives us a bowing acquaintance with great figures of the past
D．that it provides us with various experiences which provide a much broader experience than we. can get from experiences of simply our own lives alone
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