单项选择题

The failure to implement safety procedures needed in aviation and high-rise office design results from ______.

A．the great speed and efficiency of modern society
B．the complexity of various organizations
C．the management style
D．the predominance of concerns about profitability
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单项选择题
According to the passage, more and more tiny e-noses are meeting the requirements of human noses because of ______.
A．improvements in chip technology and pattern-recognition techniques
B．disease detection and disaster prevention
C．expensive prices and prompt introduction of the models
D．improvements in the olfactory abilities of our built-in sensors
单项选择题
The purpose of the writer in writing the passage is ______.
A．to give an objective account of the e-nose
B．to question the wide use of the e-nose
C．to discuss the advantages of the e-nose over the human nose
D．to encourage the introduction of the e-nose to the market at a lower price
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