单项选择题

Which of the following is NOT the exact effect of aerosol layer

A．It may reflect heat coming from the sun.
B．It facilitates the balance of heat on the Earth.
C．It would start another ice age.
D．It accelerates the loss of heat on the surface of the planet.

<上一题目录下一题>

热门试题

单项选择题

What is endangering our planet more urgently according to the passage

A．The amount of carbon dioxide increases in the atmosphere.
B．The temperature increases due to the liberation of carbon dioxide.
C．The planet is becoming hot because of the collection of aerosols.
D．The formation of aerosols causes the Earth to cool down.

单项选择题

What do the remarks of Tremaine mean at the end of the passage

A．The overturn of the present study fruit may betoken new breakthroughs.
B．If we want to achieve something original, we must throw away the old.
C．The fruits available in each field couldn't hold water all the way.
D．It is always exciting experience to discard the old and obtain the new.

相关试题