题目内容：

From a plane we can see the fields, cities, mountains or seas below．If we go into space, we see more and more of the earth．People and man-made satellites have been sent out into space to look at the earth carefully and people have learnt more about the earth in the last years．

The sea looks very beautiful when the sun is shining on it．But it can be very terrible when there is a strong wind．

The sea is very big, it nearly covers three quarters of the earth．The sea is also very deep in some places．There is one place in the sea is about 11 kilometres deep．The highest mountain in the world is about 9 kilometres high．If that mountain was put into the sea at that place, there would be still 2 kilometres of water above it!

In most parts of the sea, there are many kinds of fishes and plants．Some live near the top of the sea．Others live deep down．There are also a lot of small living things, and lots of fishes live by eating them．

The sea can be very cold．The further people go down, the sea becomes colder and colder．At one time only some men could go down into the deep sea．But, in 1970, five women scientists lived in the deep sea for fourteen days．

1.The sea covers about _________ of the earth．

A．1/3 B．1/4 C．1/2 D．3/4

2._________ are not mentioned in this passage．

A．Fishes B．Plants    C．Islands D．Living things

3.Which of the following is NOT true?

A．The sea is usually beautiful when the sun is shining.

B．The sea is always very terrible when the wind blows hard.

C．The highest mountain is in the deepest place of the sea.

D．The deeper the people go into the sea, the colder they will feel.