单项选择题

In most South American countries rail transport is plagued by operational problems as well as by obsolete equipment.

A．deficient
B．outdated
C．inferior
D．imperfect
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单项选择题
In William Shakespeare's King Lear, as the extent of Lear's folly becomes even clearer, he rages at his impotence and goes mad.
A．inability
B．dilemma
C．insecurity
D．stupidity
单项选择题
The contrast of the gray, cheerless, and shabby cities and towns of the former eastern Germany with the picture-postcard luster of the western sector was an eloquent testimony to the divergences that had to be overcome.
A．barrier
B．restraint
C．hazard
D．evidence
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