赞题库-背景图

单项选择题

Which of the following is closest in meaning to the phrase "looking up" (Line 1, Para. 2)

A．Raising one's eyes.
B．Turning better.
C．Searching for.
D．Paying a visit.

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热门试题

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