单项选择题

If a stone moved at the speed of light, it ______.

A．would weigh twice more than it is motionless
B．would weigh as much as it is on earth
C．would weigh less than it is on earth
D．would have no weight at all

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热门试题

单项选择题The first sentence in Paragraph 1 means ______.

A．no two people need exactly the same amount of living space
B．living space requirements are not always the same
C．the world requires the same amount of living space
D．nobody needs a required amount of living space

单项选择题Which of the following is true according to the passage

A．Many people know almost everything about nutrition.
B．Food, such as rice, bread and potatoes, makes people fat.
C．Vegetables grown in poor, worn-out soil may are not worse than those grown in rich soil.
D．Fresh vegetables cooked at home are always better.