单项选择题

The word" burnout" ( Para. 5, Line 3 ) here refers to the state of ______.

A．being seriously burnt in the skin
B．being unable to burn for lack of fuel
C．being badly damaged by fire
D．being unable to function because of excessive use

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热门试题

单项选择题

According to the passage the preference test was conducted in order to ______.

A．find out the role taste preference plays in a person's drinking
B．reveal which cola is more to the liking of the drinkers
C．show that a person' t opinion about taste is mere guess-work
D．compare the ability of the participants in choosing their drinks

单项选择题

The best title for this passage would be ______.

A．The Atmosphere and Our Environment
B．Research on Radiation
C．Effects of Space Radiation
D．Importance of Protection Against Radiation