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Last week our class has a heated discussion on Earth Hour. Different students hold different opinion about this activity. About 60% of the students are in favor of it. Which is known to us all, global warming is a big problem in the world. Earth Hour can raise people¡¯s awareness of global warming. However, turning off lights for an hour is energy-saving. Only through our joint efforts can we make it our earth a better place to live. However, about 40% of the students say this activity is not very meaningful. They think it is only a show or that it makes no difference. What¡¯s more, turning off lights for an hour may cause inconvenient to people¡¯s life, work and study. In our opinion, this activity is of great importance. But one activity alone is not enough if we want to save energy and protecting our earth. Let¡¯s act through our day-to-day habits.

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I like travelling and my dream of visit Beijing, the capital city of our country, come true during the National Day holidays this year. In October lst, I went to Tian'anmen Square with my parents, there we watched the flag-raising ceremony. As I watched flag rising slowly, I sang the national anthem, feel extremely excited. Then we went to some other famous tourist attraction, like the Great Wall. Standing on the Great Wall, I felt very proudly, I thought of the old saying that "One who fail to reach the Great Wall is not a hero." Although I was tired hut I really had a good time.

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Last week our class voted what to do about our class outing: visiting Yanghu Park or going to the zoo. Our girls wanted to go to Yanghu Park. And since we were in the minority, we lose to the boys, who all wanted to go to the zoo. We got the admission rate for students, which was greatly since I still had enough money to buy a brochure about the park as well as anything at the souvenir shops. The animal were scary but really amusing. As we were taking the pictures, we could see the eyes of many creatures look out at us. Most of the animals there sleep when there is sunny and wake up at night.

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¡¾ÌâÄ¿¡¿The Mystery of Dark Matter

If you look at the night sky, you'll often see stars moving very quickly. In fact, they move much more quickly than they should according to their size and the laws of physics. Scientists do not completely understand why the speed of these stars is so high. But many believe the reason is that much of the universe is made up of something called "dark matter". Groups of stars called galaxies, such as the Milky Way, might even consist of ninety per cent dark matter.

How much something weighs depends on where it is. The same object weighs only half as much on Mars as it does on Earth and almost three times as much on Jupiter. So scientists prefer to talk about the mass of something rather than how much it weighs, because mass does not change. They can work out the mass of galaxies by measuring the distance between them and the speed they move. Recently, Dr. Jorge Penarrubia and a team from Edinburgh University discovered something interesting. The mass of the Milky Way is only half as much as the mass of another nearby galaxy, Andromeda. This seems strange, but dark matter may explain why.

Finding out more about dark matter could help us understand how the universe began, but this is not easy. Lots of scientists with different types of expert knowledge are working on the problem. The Edinburgh team is working with many other universities like the University of British Columbia.

We can't see dark matter, it's very difficult to measure and we can't find out its mass. Unlike stars, dark matter doesn't produce or reflect light. But we can make a good guess that it is there because of the way things move and the way light bends. Experts now think dark mater may be very different from the mater which we find on Earth. There may also be five times as much dark matter in the universe as ordinary matter.

The Swiss scientist Fritz Zwicky first gave dark matter its name in the nineteen-thirties. Researchers have been looking for it ever since. Today, technology such as the Large Hadron Collider is collecting more and more information but this technology cannot tell us everything. New ways of finding dark matter will be needed. Investigating dark matter may even mean we will need to start asking questions about the way we look at the universe, including the ideas of Albert Einstein.

¡¾1¡¿In what way do scientists find out the mass of galaxies£¿

A.Depending on where they are.

B.Depending on how much they weigh.

C.According to the way they move and the laws of physics.

D.By calculating how far between them and how fast they move.

¡¾2¡¿Which of the following statements about dark matter is NOT TRUE£¿

A.It can't be seen.

B.It doesn't reflect light.

C.It is not unlike ordinary matter.

D.It affects the movement of things.

¡¾3¡¿What may get researchers looking for dark matter£¿

A.To change the way light bends.

B.To prove the ideas of Albert Einstein.

C.To collect more and more information.

D.To help understand the origin of the universe.

¡¾4¡¿How is the article organized£¿

(P: Paragraph)

A.B.

C.D.

¡¾5¡¿Which heading best matches Paragraph 5?

A.It's there but we can't see it.

B.Sharing ideas leads to success.

C.We may need to change the way we think.

D.What your eyes can see can't be fully explained,

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¡¾ÌâÄ¿¡¿Directions£ºComplete the following passage by using the words in the box. Each word can only be used once. Note that there is one word more than you need.

Like AIDS, flu is caused by a virus, a tiny packet of genes in a protein coat so simple that most biologists don¡¯t ¡¾1¡¿ viruses truly ¡°alive¡± until they invade£¨ÈëÇÖ£©a host cell. Then they hijack the cell and use its energy to ¡¾2¡¿ out 100,000 to 1 million copies of themselves in just 10 hours. Eventually they become so great in number that they ¡¾3¡¿ the cell from within, flooding out to further infect the body. They are spread from respiratory£¨ºôÎüµÄ£©passages, through the cough and sneeze droplets on doorknobs, desktops, coat sleeves and food tables.

The cause of flu was unknown for many years¡ªthe virus wasn¡¯t isolated until 1933. But now we know what makes flu such an annual irritant, and so ¡¾4¡¿ deadly, is that like HIV that causes AIDS, it is moving ¡¾5¡¿. Made of RNA instead of the more stable DNA, it changes like a movie monster, making vaccinations£¨ÒßÃç½ÓÖÖ£©useless in a year or so.

One thing we know about the flu is that we can¡¯t predict it. In part that¡¯s because occasionally the flu will change completely in what is called a ¡°shift¡± and ¡¾6¡¿ humans by such a surprise that a pandemic£¨Á÷Ðм²²¡£©breaks out. An estimated three to six shifts occurred in the 18th century, four in the 19th, and three in the 20th, the 1918 pandemic, the 1957 Asian flu and the 1968 Hong Kong flue. Because it can take six to nine months to make enough of an effective vaccine, a deadly shift that ¡¾7¡¿ around the world is what gives health authorities nightmares.

But there is a global network to try to stop such a pandemic in its tracks. More than 80 countries and 121 U.S. cities belong to a reporting system to ¡¾8¡¿ flu.

And now, doctors know what causes flu. They have decades of experience with vaccines to fight it, and they even have anti-viral drugs, though those are expensive and of limited ¡¾9¡¿.

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My friend Nick told me story about his,experience back in the US,which was very interested.One day he was having a yard sale and the old man living next door come by to help.As the old man looked over the things on the yard that were to be sold,he stopped at a box of golden ball for Christmas trees.On the box was a card say:¡°25 cents each...¡±¡°You will never sell these for that much.¡±he told Nick.Convinced,Nick has brought the price up to 10 cents a piece.Without a moment¡¯s delay,my neighbor picked up the box out announced:¡°I'll take them.¡±

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¡¾ÌâÄ¿¡¿Directions: Complete the following passage by using the words in the box. Each word can only be used once. Note that there is one word more than you need.

Health Workers Aim to Save Lives of Mothers, Babies with Smartphone Data

A new project in India and Uganda is aimed at helping health workers save the lives of mothers and babies with information from electronic devices.

The $100 million project is ¡¾1¡¿ by the Rockefeller Foundation, the World Health Organization, UNICEF, the World Bank and other groups. Officials plan to ¡¾2¡¿ the project to a total of 10 countries. The goal is to ¡¾3¡¿ the premature deaths of 6 million women and children by 2030.

Raj Shah is president of the Rockefeller Foundation, which leads the project. The group is providing $60 million of the $100 million ¡¾4¡¿ cost. Shah said the plan is to give health workers low-cost tools to help them gather the information they need to help communities and families most at risk.

The project will provide ¡¾5¡¿ such as real-time risk maps to help health workers reach mothers and children. Workers also will be able to study non-health data on climate or social media patterns to predict and prepare for local disease ¡¾6¡¿ or health emergencies.

Shah told Reuters, "A few years ago, these community health workers had no real technology ... today the vast majority of them have smartphones with data and software technologies in their hands --- and with those, we can help them do their work better."

A U.N. report published last week ¡¾7¡¿ that more women and newborn babies survive now than ever before. But the report said that a baby or a ¡¾8¡¿ woman still dies every 11 seconds somewhere in the world.

Deaths of mothers are nearly 50 times higher for women in sub-Saharan Africa than in ¡¾9¡¿ countries. The report also found that babies in Sub-Saharan Africa are 10 times more ¡¾10¡¿ to die in their first month of life.

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I enjoy doing different things in my free time. So I like reading books best. I grew up with peoples who loved reading. When I was small, my mother reads to me every night. I could never sleep without listening a story. She was and still is the great storyteller. That is because I love books and all the interesting stories that they hold. My favouritest books are fairy tales. I have been read so many stories of princes and princesses, giants and dwarfs. When I read books, I imagine me in faraway, magical places with the fairytale characters, which makes reading so much fun. Yes, read storybooks is my hobby

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