考研英語聽力基本功訓練1: Passage10

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Today,we'll talk about another planet,Mar

Mars is one of the planets in the solar syste

It is the forth planet from the su

It is named for the Roman god of wa

because it appears fairly red in the night sky.

Mars is a relatively small plane

with about half the diameter of Eart

The force of gravity on the surface of Mar

is about one-third of that on Eart

Mars has twice the diamete

and twice the surface gravity of Earth.

The surface area of Ma

is almost exactly the sam

as the surface area of the dry land on Eart