The night sky is our earliest library. There, we stored our knowledge, and passed it down around the fire, before we invented the written word.
I remember going to the local university for an astronomy (天文学) night when I was a child. That night, I saw Saturn, one of the planets, and its rings with my own eyes for the first time. The rings shone bright against the blackness of space and suddenly the universe (宇宙) wasn’t something that you only read about or imagined in your head. It was right there, and you were a part of it. That moment is priceless.
While starlight is good, light pollution here on Earth can be a real problem. For the past 200 years or so, we have used too much electricity (电) to make the night brighter. However, brighter doesn’t usually mean better, especially when a lot of that light shines up into the sky where no one needs it.
Luckily, some cities have taken actions, like setting up new downward-directing lights along the streets. I hope that more cities will join in and continue the practice of controlling unnecessary lighting, so that more of us can watch the night sky in a way humans have for thousands of years.
根据短文内容,选择最佳答案。
【小题1】What is the night sky compared to?
A.A book. | B.The earth. | C.A library. |
A.It opened his eyes. | B.It controlled his mind. | C.It was a real problem. |
A.A brighter night. | B.Less use of lighting. | C.More personal space. |
In 2010, six people made history when they sailed (航行) across the Pacific Ocean in a boat. Why was this special? Because the boat was made from 12,500 used plastic (塑料的) bottles, and its name was Plastiki.
The journey wasn’t easy. They took 128 days to sail 9,000 miles across the ocean from California, USA to Australia. During this time, they lived on the boat, ate food from cans and took showers in sea water. So why did they do it? Because they wanted to draw people’s attention to the problem of plastic waste.
The Plastiki project was started by David de Rothschild. In 2006, he read about plastic pollution in the seas and oceans, and learnt that one plastic bottle lasts for 450 years!
Plastic waste causes 80% of ocean pollution, kills a million seabirds and 100,000 fish and other sea animals. Many people think that this plastic waste comes from ships, but they’re wrong. The amazing fact is that 80% of the plastic in the oceans is made of the rubbish we drop in our streets, parks and beaches.
The easiest way to make a difference is to stop using plastic shopping bags and disposable (一次性的) water bottles. The great thing is that now millions of people are “doing their own Plastiki” in their homes, schools and offices.
As David de Rothschild said, “We aren’t scientists, we’re ordinary people. We want to show that if we work together, we can do something”.
【小题1】Which of the following is right about six people’s journey?A.They took about two months to sail across the ocean. |
B.They sailed across the ocean from Canada to Australia. |
C.They went on the journey by taking an unusual boat. |
D.They ate sea food and drank sea water in the journey. |
A.To pick up rubbish like plastic bottles under the sea. |
B.To carry out a scientific research on the sea animals. |
C.To help people learn some tips for an enjoyable sail. |
D.To make people know the problem of the plastic waste. |
A.By telling a story. | B.By listing numbers. |
C.By showing opinions. | D.By asking questions. |
A.Turn used plastic into everyday objects and put into use. |
B.Buy some plastic bags when shopping in the supermarket. |
C.Use disposable plastic bottles to drink water in their office. |
D.Stop people from dropping much food waste in the street. |
The earth has warmed by about 1°F (华氏度) over the past 100 years, but why and how?
Well, scientists are not quite sure. Maybe the earth gets warmer and warmer on its own. But many scientists say that people are doing many things which makes the earth warmer.
First, greenhouse effect (温室效应) is a very important reason for the change of the earth. People give out too much energy into the air every year. It makes the earth warmer. Climate (气候) change is another important reason. Sometimes it becomes too hot and sometimes too cold. Sometimes there is too much rain and sometimes too little. The change of the climate makes the earth warmer. In turn, the warmth of the earth changes the climate, too.
When the earth becomes warmer, there may be more rain and a rise in sea level. It will affect the growth of plants, animals and people. On a Pacific island, 100 people have to move to higher ground because the sea is rising. These people can no longer live on the coast. Before that, two islands without people went underwater in 1999. Scientists say that the seas can rise by nearly one metre by 2100.
People can affect the earth's air, land and water. As for us, we can do many things to protect the earth. For example, we can use fridges less. We can tell more people about protecting the earth.
【小题1】Earth Day is probably set for people to ______.
A.learn more about the earth | B.make full use of the earth |
C.take better care of the earth. | D.study the warmth of the earth |
______ now.
A.not very clear | B.completely secret | C.well known | D.not given yet |
A.sea rising | B.climate change | C.nature's unbalance | D.people's activity |
A.there is more rain now | B.we should protect the earth |
C.we must stop pollution | D.sea level is getting higher |
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