单项选择题

Genetic engineering and cloning technology __________ in meaning.

A．overlap
B．overflow
C．prolong
D．collide
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单项选择题
Hurricane may __________ daily life, as well as cause massive amounts of property damage.
A．undermine
B．intrigue
C．rupture
D．disrupt
单项选择题
The installation of radar is supposed to keep track of airlines in the __________.
A．velocity
B．proximity
C．terrain
D．vicinity
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