Zhoukoudian is a small village situated about 50 kilometers to the southwest of Beijing. In the 1920s, archaeologists discovered some prehistoric human bones there which changed people’s view of China’s history. They came from an unknown species of man and were the first evidence of human life in China thousands of years ago. The remains were three teeth!
In 1929, a complete skull was also discovered. Eventually, archaeologists found almost 200 items, including six skulls and more than 150 teeth. These discoveries proved the existence of a human species who lived in the area between 700,000 and 200,000 years ago. Four sites where Beijing Man and his relatives lived were discovered on the northern face of Longgushan. They lived in the caves in the area.
However, the life span of Beijing Man was short. About 70% of the people probably died before the age of 14. Fewer than 5% lived to the age of 50. Ashes were found alongside the fossils which showed they had used fire for cooking food and also for light, warmth, and protection against wild animals. This is the earliest evidence of the use of fire anywhere in the world. They also made tools of bones and stones. Unfortunately, when Japan invaded China in 1937, excavations (发掘) at the Beijing Man Site stopped and most of the fossils disappeared, including a Beijing Man skull. After the People’s Republic of China was established in 1949, the work started again.
Zhoukoudian was listed as a World Heritage Site in December 1987. It has not only given us important information about prehistoric Asian societies, but also provided amazing evidence about the process of evolution. Today, parts of the caves have been badly affected by rain. Some areas are almost completely covered in weeds, causing serious damage. Pollution from the nearby factories has also led to the problem. This is a very serious matter and the Chinese Academy of Sciences is trying to raise public awareness of protecting it.
【小题1】Archaeologists _________.

Happiness is associated with smiling. But do we always smile when we are happy?

During the Olympic Games in Barcelona in 1992, Spanish researchers analyzed the facial expressions of 22 gold medal winners at the medal ceremonies. The researchers were surprised to see that these medal winners didn't smile very much. In fact, throughout the different medal ceremonies, they only smiled about 10% of the time. But during the brief moment when the gold medal was put around their neck, the medal winners grinned (露齿笑) about 70% of the time.   

The researchers interviewed the winners they had watched to find out how they felt. All the winners interviewed said that they felt intensely(强烈的）happy throughout the ceremony.   

Though they were profoundly（衷心地）happy, they didn't smile a great deal. The researchers concluded that smiling was not the automatic expression of happiness. The fact that the gold medal winners smiled much more when they were actually being given their medals could be explained because, according to the Spanish researchers, smiling was a form of communication between individuals. The happy athletes were smiling at the people who were giving them gold medals. Perhaps we can support the findings of the Spanish researchers by making some observations of our own behaviors. When we are all alone, for example, do we smile at ourselves when we are happy? Probably not very often. If someone greets us with a friendly smile, do we respond with a smile? Yes, we probably do. When a friend gives us a beautiful present, will we show our appreciation with a smile? Yes, of course. But if we are sitting alone watching television, do we smile at a commentator (讲解员) who smiles at us?

 How much of the time did the gold medal winners smile during the medal ceremonies?

       A. 10%.   B. 70%.   C. 22%.   D. 92%.

【小题２】According to the passage, when did the athletes smile quite a lot?

        A. Throughout the medal ceremony.             

B. When they were informed of their success.

       C. When the gold medal was put around their neck. 

D. When their national flag was raised.

【小题３】 According to the passage, on which of the following occasions would we most probably NOT smile?

A. When we are sitting alone watching TV.   

B. When someone greets us with a friendly smile.

C. When a friend gives us a beautiful present. 

D. When we feel intensely happy.

【小题４】According to the passage, which of the following statements is TRUE?

A. The gold medal winners were too nervous that they would hardly smile at the medal ceremonies.

B. People will always smile automatically when they feel happy.

C. Smiling is a way of communication.

D. When the gold medal was put around their neck, the gold medal winners were smiling at the audience but not at those who gave the medal.

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.

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

It takes Earth ______to orbit the sun in one year.

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

Life 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

D
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.
68.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
69. It takes Earth ______to orbit the sun in one year.
A.24 hours                   B.24 days                     C.365 days                   D.360 days
70. Life 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
71.The craters on the moon were caused by______.
A. meteorites hitting its surface              B. active volcanoes
C. volcanoes which do not erupt anymore      D. some reasons that are not mentioned

Zhoukoudian is a small village situated about 50 kilometers to the southwest of Beijing. In the 1920s, archaeologists discovered some prehistoric human bones there which changed people’s view of China’s history. They came from an unknown species of man and were the first evidence of human life in China thousands of years ago. The remains were three teeth!

In 1929, a complete skull was also discovered. Eventually, archaeologists found almost 200 items, including six skulls and more than 150 teeth. These discoveries proved the existence of a human species who lived in the area between 700,000 and 200,000 years ago. Four sites where Beijing Man and his relatives lived were discovered on the northern face of Longgushan. They lived in the caves in the area.

However, the life span of Beijing Man was short. About 70% of the people probably died before the age of 14. Fewer than 5% lived to the age of 50. Ashes were found alongside the fossils which showed they had used fire for cooking food and also for light, warmth, and protection against wild animals. This is the earliest evidence of the use of fire anywhere in the world. They also made tools of bones and stones. Unfortunately, when Japan invaded China in 1937, excavations (发掘) at the Beijing Man Site stopped and most of the fossils disappeared, including a Beijing Man skull. After the People’s Republic of China was established in 1949, the work started again.

Zhoukoudian was listed as a World Heritage Site in December 1987. It has not only given us important information about prehistoric Asian societies, but also provided amazing evidence about the process of evolution. Today, parts of the caves have been badly affected by rain. Some areas are almost completely covered in weeds, causing serious damage. Pollution from the nearby factories has also led to the problem. This is a very serious matter and the Chinese Academy of Sciences is trying to raise public awareness of protecting it.

1.Archaeologists _________.

2.Beijing Man used fire to do all of the following things EXCEPT _____.

3.What’s the main idea of the last paragraph?