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单项选择题

A．The relationship between man and his environment.
B．The relationship between living things and their environment.
C．The relationship between man and living things.
D．The relationship between man’’s brain and other living things.
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单项选择题According to the passage, there are more myths about the common cold than any other human disease because________.

A．it spreads more quickly
B．it is the most widespread illness
C．the climate of the world is getting colder and colder
D．few people can catch colds

单项选择题The hydra is a kind of ________.

A．flatworm
B．coelenterate
C．sea anemone
D．nerve cell

单项选择题Eating too much salt can raise your cholesterol.

A．Y
B．N
C．NG

单项选择题A．Both Sarah and Tom have been awarded doctoral degrees.B．Tom has arranged to meet his bride Sarah in Hawaii.C．Tom was more excited than Sarah at the wedding.D．A double blessing has descended upon Tom.

A．Both Sarah and Tom have been awarded doctoral degrees.
B．Tom has arranged to meet his bride Sarah in Hawaii.
C．Tom was more excited than Sarah at the wedding.
D．A double blessing has descended upon Tom.

单项选择题A．In the 1360s.B．In 1795s.C．In the 1950s.D．In the 1960s.

A．In the 1360s.
B．In 1795s.
C．In the 1950s.
D．In the 1960s.