单项选择题

Why light in color is important to large animals in deserts

A．It helped them maintain a constant normal body temperature.
B．It reflects rather than absorbs the sun-light.
C．It helps them see their peers at night.
D．It keeps them keep cool during the night.
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单项选择题
What is the passage mainly about
A．Animals developed different strategies to survive.
B．Large animals can take strategies to reduce the effect of extreme heat.
C．Animals can tolerate the loss of body water.
D．A very dehydrated person can drink enough water to rehydrate.
单项选择题
Today, the chess-playing computer can be programmed to ______.
A．have trillions of responses in a second to each possible move and win the game
B．store complete data and beat the best players
C．learn from chess-playing in the early stage and go on to win the game
D．predicate every possible move but may fail to give the right response each time
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