单项选择题

The word "innovations" in the second paragraph means _________.

A．new theory
B．new phenomenon
C．changes
D．new inventions
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单项选择题
An important question raised after the Tsunami is that _________.
A．how to help those helpless people
B．how to detect the happening of tsunami
C．how to predict tsunamigenic earthquakes
D．how people should be cautiously warned
单项选择题
According to Leo Hickey of Yale University, which of the following may have spawned more advanced species of land animals
A．The barren ocean floor.
B．The Arctic.
C．The rain forest.
D．Temperate Zones.
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