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更多“7．If natural selection was to …”相关的问题
The BBC dictionary differs from Oxford and Longman is that ______.
A．it has a wider selection of encyclopedic entries
B．it is mainly designed to meet the needs of radio listeners
C．it lays more emphasis on language than on culture
D．it is intended to help listeners develop their listening comprehension skills
Most of us are blind to this interconnectedness of everything in the natural world.()
Unlike gasoline, natural gas can be regarded as a renewable resource.
A．Y
B．N
C．NG
Natural fiber ______ (据说优于) synthetic fiber.
The average cost of natural gas is onethird less than that of gasoline at the pump.
A．Y
B．N
C．NG
