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A．by
B．on
C．over
D．at
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单项选择题A．stoneB．boardC．tableD．plate

A．stone
B．board
C．table
D．plate

单项选择题According to the passage, the effects of Tempura' s eruption were ______.

A．of several days' duration worldwide
B．felt mainly in the Dutch East Indies
C．evident in the decreased world temperature
D．immediately evident to the world's scientists