单项选择题

In the late 19th century, Jules Verne, the master of science fiction, foresaw many of the technological wonders that are （）today.

A．transient
B．commonplace
C．implicit
D．elementary

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单项选择题
Mainstream pro-market economists all agree that competition is an （）spur to efficiency and innovation.

A．extravagant
B．exquisite
C．intermittent
D．indispensable
单项选择题
America has now adopted more （）European-style inspection systems, and the incidence of food poisoning is falling.

A．discrete
B．solemn
C．rigorous
D．autonomous
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