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.
1.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.
2.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.
3.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.
4.How is the article organized？
(P: Paragraph)
A.
B.
C.
D.
5.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,
Festivals in India are the special occasions when the country holds many celebrations. Socially, the whole nation becomes active in celebrations. This is the main reason why festivals in India are celebrated by the whole society. On such occasions, families will get together, exchange gifts and greetings, and take part in a lot of celebrations and even special fairs. All these are done to keep the festive spirit alive in modern times.
What is special about these celebrations in India is that people celebrate their common culture in their communities. There is a wide variety of festivals in India because of the presence(存在)of many different religions, beliefs, ideas and cultures. It is even said that some places in the country celebrate festivals 365 days a year. They are mainly religious festivals, cultural festivals and tourist festivals that are organized to keep the traditions, values and heritage of the region.
Religious festivals are celebrated as part of the Indian belief system. They are organized to honor spiritual personalities and events related to the journey of a religion. Cultural festivals in India are organized to provide a platform for different forms of music, dance and other art. To keep their artistic traditions alive and even make them become more popular in the future, many cities in India are active in cultural events. The rich cultural heritage of India attracts the Western world during the celebration of important festivals such as Onam, Holi and Durga Puja. Tourist festivals in the country are organized to celebrate the heritage of the land for tourism purposes. These celebrations every year bring good results and attract a large number of tourists, both within the country and abroad.
These festivals in India focus on enriching people’s "Indian" experience in the most real way. For this purpose, foreigners are very interested in attending the festivals, which are organized to show the rich and colorful side of the country.
1.In India，the whole nation often celebrates festivals actively to .
A.have much fun on special occasions B.exchange special gifts and greetings
C.keep the traditions of their festivals D.meet all their family members and relatives
2.Why does India have so many festivals?
A.Because the Indians like singing and dancing.
B.Because the Indians want to attract more tourists.
C.Because there are a great number of old attractions.
D.Because there are many different religions, ideas and cultures.
3.The cultural festivals are usually celebrated by .
A.performing different art forms
B.visiting the famous old buildings
C.having a journey of honoring spiritual personalities
D.getting together and attending fairs
4.In which part of the website can we read this passage?
A.Travel. B.Culture.
C.Economy. D.Technology.
It’s 5:00 in the morning when the alarm(闹钟)rings in my ears. I roll out of bed and walk blindly through the dark into the bathroom. I turn on the light and put on my glasses. The house is still as I walk downstairs while my husband and three kids sleep peacefully. Usually I go for a long run, but today I choose my favorite exercise DVD, Insanity. Sweat pours down my face and into my eyes. My heart races as I force my body to finish each movement. As I near the end of the exercise, I feel extremely tired, but a smile is on my face. It’s not a smile because the DVD is over, but a smile of success from pushing my body to its extreme limit.
Some people enjoy shopping, smoking, food, work, or even chocolate. But I need exercise to get through each day. Some shake heads when they see me run through the town. Others get hurt when I refuse to try just one bite of their grandmother’s chocolate cake. They raise their eyebrows, surprised by my ＂no thank you＂, or by my choice to have a salad. Over the years, I have learned it’s okay to just say ＂no＂. I shouldn’t feel sorry for refusing food that I don’t want to eat.
So what drives me to roll out of bed at 5:00 a.m.? What gives me the reason to just say no to ice cream? Commitment. A commitment to change my life with a way that reduces daily anxiety, increases self-confidence and energy, extends life and above all improves my body shape. This is the point where a smile appears on my face as I look at myself in the mirror or try on my favorite pair of jeans that now fit just right. It’s through commitment and sweat that I can make a difference within myself inside and out.
1.Why is there a smile on the author’s face in the morning?
A.Because she sees her family sleeping peacefully.
B.Because she finishes her favorite exercise.
C.Because she enjoys the interesting DVD
D.Because she feels a sense of achievement.
2.Which of the following is true according to Paragraph 2?
A.She doesn’t treat others politely.
B.She likes to make others surprised.
C.Others don’t understand what she does.
D.Others try to help her by offering her food.
3.What does the underlined word ＂commitment＂ in the last paragraph mean?
A.Good health. B.Firm belief.
C.A strong power. D.A regular habit.
4.What can we learn about the author from the text?
A.She acts in a strange way.
B.She wants to look different from others.
C.She aims to develop a good body shape.
D.She has difficulty getting along with others.
Poteet Strawberry Festival
Poteet, Texas, USA
April 11—April 13
Description:
The Poteet Strawberry Festival is one of the oldest, most popular events in the state and is recognized as the largest agricultural festival in Texas as well as one of the most exciting, dynamic festivals in the Greater Southwest. The 100-acre site, which is located on Hwy. 16, 20 minutes south of San Antonio, offers free parking, clean public restrooms, handicapped accessibility, complete RV facilities, and tent covered activities during the fun, filled Festival Weekend.
The Poteet Strawberry Festival includes fourteen areas of continuous, family entertainment featuring concerts with nationally known Country Western and Tejano stars, dancers, gunslingers, clowns, puppets, regional bands, various contests, and rodeo performances. These activities are included in the price of a $10.00 admission ticket. Children aged 12 and under are admitted free of charge as well as active, reserve and retired military with proper ID.
Performers:
Craig Morgan, Pam Tillis, Rick Trevino
Location:
Poteet, Texas
Directions:
30 miles south of San Antonio on Hwy. 16
Times:
The Festival Grounds will open at 6:00 pm Fri. and at 10:00 am both Sat. & Sun.
Admission:
Adult $10.00
Children 12 & under / active, reserve, and retired military personnel with proper ID are admitted FREE
Website: http://www.strawberryfestival.com
Telephone: 830-276-3323
Email: nitaharvey@sbcglobal.net
1.Which of the following is NOT mentioned in the passage?
A.The position of Poteet Strawberry Festival.
B.The open time of Poteet Strawberry Festival.
C.The price of parking cars.
D.The price of taking a train there.
2.Jack, a soldier, together with his two children (one is 10, the other 18) wants to take part in the activity. How much should they pay?
A.10 dollars. B.5 dollars.
C.30 dollars. D.20 dollars.
3.The passage most probably comes from ____________.
A.the news report in a newspaper
B.the advertisement in a newspaper
C.the entertainment section of a magazine
D.the program of a radio
假设你叫李华，你的一位朋友John刚从国外归来，邀请你参加本周日在他家举办的朋友聚会，但你不能参加。请你根据以下要点给他写一封电子邮件：
1. 忙于准备高考；
2. 身体不适；
3. 表示歉意并另约时间。
注意：1. 词数：100左右。
2. 可适当增加细节，以使行文连贯。
假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏字符号（∧），并在其下面写出该加的词。
删除：把多余的词用斜线（\）划掉。
修改：在错的词下划一横线，并在该词下面写出修改后的词。
注意：1. 每处错误及其修改均仅限一词；
2. 只允许修改10处，多者（从第11处起）不计分。
This summer I am to attend a English summer camp for Sino-Us cultural exchanges, which I have long been dreamed about.
This programme was aimed at promoting the understanding of the people and culture among the two countries. During the two-weeks English summer camp, we will visit some famous American universities, experience American culture or tour places of interest in the US. Furthermore, we will also be offered a platform practice our spoken English in an authentically language environment.
I am sure of that this programme will help me better understand the cultural difference. Meanwhile, I can introduce my country to American students through this programme, that will definitely be a great success.
