Earth is the third planet from the sun.It is one of the four inner planets.The other three inner planets are Mercury,Venus,and Mars.The inner planets are also called the rocky planets,because they are made of rocks.

Earth is often called the “Water Planet”,because it is the only planet in our solar system which has liquid water on its surface.About 70% of the surface of Earth is covered by water! The other part of Earth is made up of continents and islands which have different landforms on them.Examples of landforms are mountains and plains.Plants and animals can live on Earth,because it has so much water.

Earth spins very quickly compared to other planets.It only takes Earth 24 hours to spin around its axis one time.One Earth day is 24 hours long!Earth orbits the sun in 365 days! This makes one Earth year 365 days long!

Earth is the only planet in our solar system where humans,other animals,and plants can live.There is plenty of water to drink or to live in.Water is present on Earth in its big oceans and in the air! Clouds are made of water vapor.The atmosphere has a lot of oxygen in it for animals to breathe,but the rest of our “air” is made up of water vapor,nitrogen,carbon dioxide,and other gases.The air is perfect for plants to grow.Earth temperature is not the same in all places,but the temperature is just right for plants,animals,and humans in most places on Earth.

Like the other inner planets,Earth has volcanoes.Volcanoes on Earth are different from those on other planets,because they still erupt.Scientists think that there may be active volcanoes on other planets and moons in our solar system,but they are still studying this.

Earth has one planet which we call the Moon.The surface of the Moon has many craters on it These were caused when meteorites hit it.It has many volcanoes on it which do not erupt anymore.We can see the moon at night without using a telescope.It is the closest space object to our planet,Earth.

73.Earth is called the Water Planet,______.

A.because animals need water

B.the water makes it look blue from space

C.it has liquid water on its surface

D.Earth is the third planet from the sun

74It takes Earth ______to orbit the sun in one year.

A.24 hours                   B.24 days                     C.365 days                   D.360 days

75Life exists on Earth,______.

A.because the water,air,and temperature are just right

B.there is water vapor in clouds

C.Earth is the planet closest to the sun

D.earth has volcanoes

【小題1】C

【小題2】C

【小題3】A

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科目：高中英語(yǔ) 來(lái)源： 題型：閱讀理解

The surprising experiment I am about to describe proves that air is all aroud you and that it proves down upon you．Air pressure is a wonderful force．When you swim underwater, you can feel water push down your body．The air all around you does the same．However, your body is so used to it that you do not notice this ．The pressure is caused by a layer of air called the atmosphere．This layer surrounds the Earth , extending to about five kilometers above the Earth’s surface．

The following experiment is an easy one that you can do at home．But make sure that you are supervised , because you will need to use matches．Now for the experiment！

What you need

·A hard-boiled egg without the shell

·A bottle with a neck slightly smaller than the egg

·A piece of paper

·A match

Metheod

1) Check that the egg will sit firmly on the neck of the bottle．

2) Tear the paper into strips and put the strips into the bottle．

3) Light the paper by dropping a burning match into the bottle．

4) Quickly sit the egg on the neck of the bottle．

Result

Astonishingly,the egg will be sucked into the bottle．Your friends will be amazed when you show them the experiment．But be careful when you handle matches．

Why it happened

As the paper burns,it needs oxyen and uses up the oxygen(air) in the bottle．The egg acts as a seal in the neck of the bottle,so no more air can get inside ．This reduces the air pressure inside the bottle．The air pressure must equalize,so more air from outside must enter the bottle．The outside air pressure against the egg and then the egg is pushed into the bottle!The proves that air is all around and that it is pressing down on it．

53．When you do the experiment, why need you a person beside you?

     A．You couldn’t place the egg on the bottle by yourself．

     B．The egg needs to be shelled．

     C．You need to use matches．

     D．The bottle can’t sit firmly on the desk．

54．The purpose of doing this experiment is to prove ______．

     A．a(chǎn)ir pressure is a wonderful force

     B．water can push down your body when you swim underwater

     C．the air pressure is not equalized around us

     D．the earth is surrounded by a layer of air called the atmosphere

55．How did the egg put into the bottle？

       A．The oxygen inside the bottle suckde the egg in．

       B．It became solt without the shell．

       C．The neck of the bottle was wide enough．

       D．The outside air pressure forced it into the bottle．

56．The passage is ______．

     A．a(chǎn)n experiment report            B．a(chǎn) scientific story

     C．a(chǎn) research report                  D．a(chǎn)n interesting novel

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科目：高中英語(yǔ) 來(lái)源：2012-2013學(xué)年廣東省廣州六中高一上學(xué)期期末考試英語(yǔ)試卷（帶解析） 題型：閱讀理解

Not long ago the movie 2012 came into screen．The people were threatened by those scenes of destroying flood, severe earthquake, terrifying hurricane and constructions representing human civilization being destroyed and even swallowed by disaster．Luckily, they are just the director' s imagination, but the present situation is not heading a positive direction, either．
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The earth is the only planet that scientists are certain has life .What does the earth have that the other planets don’t ? For one thing , the earth has just the right temperature . As the third planet from the sun , the earth seems to be just the right distance away . The planets that are closer to the sun are so hot that their surfaces bake in the sun . The farthest planets are cold balls .
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E
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科目：高中英語(yǔ) 來(lái)源：20102011學(xué)年荊州中學(xué)高一上學(xué)期期末考試英語(yǔ)試卷 題型：其他題

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