What do you think are the most important inventions of the past 2,000 years? The TV? The printing? The telephone? Or the computer? A report shows that these are not the only important inventions. Here are four other important ones.
Paper is one of the most important inventions. You can’t have printing without paper. In 105 AD, Cai Lun invented paper in China. Long before the printing and Internet, Cai Lun’s invention allowed us to write down information, stories and history.
One of the simplest (最简单) inventions to save life is the toilet. Before toilets, waste ran into the rivers from people’s houses. Illnesses were common (普通的) in big cities, and it was often difficult to find clean drinking water.
Animal food is another invention. Before the invention, most animals were killed every autumn because there was not enough food for them in the winter. After hay (干草) became a kind of common animal food, animals could live through the long winter.
Reading glasses is the fourth invention. People start getting far-sighted (远视) from the age of 45. Glasses mean that anyone can read, write and do “close work” after that age. Without glasses, the world would be difficult for the people above 45.
【小题1】Cai Lun’s invention of paper makes it possible to ______.

阅读短文，根据短文内容，从短文后的五个选项中，选出能填入空白处的最佳选项。
Around the world more and more people are taking part in dangerous sports and activities._______ 【小题1】_________---those who have climbed the highest mountains, traveled into unknown parts of the world or sailed in small boats across the greatest oceans.
_____【小题2】______I would consider bungee(蹦极) jumping to be a good example of such an activity. You jump from a high place(perhaps a bridge or a hot-air balloon) 200 meters above the ground with an elastic(有弹性的) rope tied to your ankles. You fall at up to 150 kilometers an hour until the rope stops you from hitting the ground.______ 【小题3】______ Other activities which most people would say are as risky as bungee jumping include jumping from tall buildings and diving into the sea from the top of high cliff(悬崖).
For the reasons, some psychologists explain that many people think their life in modern societies has become safe and boring. _________【小题4】__________They had to go out and hunt for food, diseases could not easily be cured, and life was a continuous battle (战争)for survival.
Nowadays, according to many people, life offers little excitement. They live and work in comparatively safe conditions; they buy food in shops; and there are doctors and hospitals to look after them if they become ill.___ 【小题5】__________

What do you think are the most important inventions of the past 2,000 years? The TV? The printing? The telephone? Or the computer? A report shows that these are not the only important inventions. Here are four other important ones.

Paper is one of the most important inventions. You can’t have printing without paper. In 105 AD, Cai Lun invented paper in China. Long before the printing and Internet, Cai Lun’s invention allowed us to write down information, stories and history.

One of the simplest (最简单) inventions to save life is the toilet. Before toilets, waste ran into the rivers from people’s houses. Illnesses were common (普通的) in big cities, and it was often difficult to find clean drinking water.

Animal food is another invention. Before the invention, most animals were killed every autumn because there was not enough food for them in the winter. After hay (干草) became a kind of common animal food, animals could live through the long winter.

Reading glasses is the fourth invention. People start getting far-sighted (远视) from the age of 45. Glasses mean that anyone can read, write and do “close work” after that age. Without glasses, the world would be difficult for the people above 45.

1.Cai Lun’s invention of paper makes it possible to ______.

A．have printing                           B．feed animals

C．drink clean water                       D．do “close work”

2.The invention of the toilet can stop people from ______.

A．saving water                           B．getting ill

C．living in big cities                        D．finding clean water

3.Why couldn’t the animals live through the winter?

A．It was very cold in winter.                 B．They didn’t have enough food to eat.

C．They had no drinking water.               D．They died of illness.

4.From the last paragraph we learn that ______.

A．all people need reading glasses

B．anyone must do “close work” after 45

C．reading glasses are useful

D．life is more difficult for the people under 45

Around the world more and more people are taking part in dangerous sports and activities. Of course, there have always been people who have looked for adventure(冒险)---those who have climbed the highest mountains, traveled into unknown parts of the world or sailed in small boats across the greatest oceans. Now, however, there are people who look for an immediate excitement from a risky(冒险的) activity which may only last a few minutes or even seconds. I would consider bungee(蹦极) jumping to be a good example of such an activity. You jump from a high place(perhaps a bridge or a hot-air balloon) 200 meters above the ground with an elastic(有弹性的) rope tied to your ankles. You fall at up to 150 kilometers an hour until the rope stops you from hitting the ground. It is said that about 2 million people around world have now tried bungee jumping. Other activities which most people would say are as risky as bungee jumping include jumping from tall buildings and diving into the sea from the top of high cliff(悬崖).
For the reasons, some psychologists explain that many people think their life in modern societies has become safe and boring. Not very long ago, people’s lives were constantly(持续的) in danger. They had to go out and hunt for food, diseases could not easily be cured, and life was a continuous battle (战争)for survival.
Nowadays, according to many people, life offers little excitement. They live and work in comparatively safe conditions; they buy food in shops; and there are doctors and hospitals to look after them if they become ill. The answer for some of these people is to look for danger in activities such as bungee jumping.
【小题1】Are there many people who are taking part in the dangerous sports?
【小题2】How many kinds of dangerous sports does the writer refer to?
【小题3】How long does a bungee jumping usually last?
【小题4】What do many people think of their life nowadays?
【小题5】What does the writer tell us in the last two paragraphs?