单项选择题

Suppose the earth's temperature rose by 3 degrees, ______.

A．great harm would be done to mankind
B．the sea level would go by 10 centimetres
C．all the land in the world would be flooded
D．crops would be unable to grow on the earth

<上一题目录下一题>

热门试题

单项选择题

Which of the following is NOT true

A．Burning too much coal and oil produces lots of greenhouse gases.
B．It has become warmer on the earth now than in the past.
C．Gases put into the atmosphere now will affect the earth years later.
D．The temperature in a greenhouse is as high as that in the atmosphere.

单项选择题

One way to lower the cost of medical care would be ______.

A．not to see a doctor
B．to pay doctors less money
C．to let medical students have free or partly free medical education
D．to forbid doctors to ask their patients for too much money