单项选择题

Of all the oceans in the world, the Indian Ocean contains more than（）

A．5 per cent of the world’s water
B．15 percent of the world’s water
C．20 percent of the world’s water
D．50 percent of the world’s water

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热门试题

单项选择题

When some of the stamps are difficult to find, （）

A．nobody will try to get them
B．they can become very valuable
C．everybody would like to buy them
D．they will be worthless

单项选择题

Which of the following is true （）

A．When a child is two years old, he prefers to use both of his hands to grasp objects.
B．Scientists have given the reason for this tendency.
C．A monkey can use both of his hands equally well.
D．Those who prefer to use their left hands live a difficult lif