The natural world is colorful with humans，plants and animals showing different colors.
Human skin can be many different colors and it changes.with the sun，our feelings or our health for example.This is because of pigments（色素），which reflect light and make what the eye sees as colors.So，when we feel excited or angry，our heart can send more blood to the face and the pigments in the skin become red.This is why we have the expression that someone. "sees red"when they are angry.
Plants also have pigments.Color is important for them to live on.The bright colors of flowers catch the attention of insects（昆虫），which then carry their pollen（花粉）from one flower to another.Bees can see colors we cannot，and they follow these to the inside of the flower.Without bees visiting flowers in this way，many plants would die out.
Animals also use color for their own need.They protect themselves with different colors so as not to be seen by predators.The snowshoe hare for example，a type of wild rabbit，changes color with seasons for this reason.During summer it is a brown color，and in winter it is white so that it can hide in the snow.However，some animals use color as a warning to make predators stay away.Bright colors such as yellow and red are often used in this way.Nature，however，is very clever，and predators also use colors to attract（吸引）the animals they feed on..
So，we can see that there may be many different reasons and uses for colors in the natural world.Some uses of color in nature remain unknown；but one thing is for sure，color not only makes our planet beautiful but it is also necessary for our planet to live on.
（1）Paragraph 2 mainly tells us that is/are the cause that makes human skin change color.
A.feelings
B.pigments
C.Blood
D.sunshine
（2）According to Paragraph 3，plants can use to attract insects.
A.leaves
B.fruits
C.pollen
D.color
（3）The underlined word"predators""in Paragraph 4 refers to animals which .
A.hide in secret places
B.kill other animals for food
C.change color with the sun
D.protect themselves from danger
（4）What is the main purpose of the passage？
A.To describe animals' ways of life.
B.To encourage us to study color in nature.
C.To introduce the uses of colors for life on earth.
D.To explain the importance of protecting our planet.
If the only sports you do are dancing your fingers across your keyboard, you could be in serious danger of more than just becoming overweight and out of shape.
Do you often feel sleepy, like something is weighing down on your head? Do you feel forgetful? Do you sometimes feel uncomfortable up and down your neck and lower back, and you can’t explain why? Do you get sick often? It could be radiation(辐射) from your computer causing it. If you spend three hours or more a day in front of a computer, you are more easily harmful by the hazard(危险).
We have got so used to using computers that we often neglect(忽略) to think of them as dangerous sources of harmful radiation. A safe amount of radiation is 25V/m(Volts/meter). Do you want to guess how much our personal computers give off?
Keyboard： 1000 V/m
Mouse： 450 V/m
Monitor： 218 V/m
CPU： 170 V/m
Notebook computers： 2,500 V/m
Ways to Protect Yourself from Harmful Computer Radiation
1. Decorate your desk with cactus(仙人掌) plants, they take in radiation.
2. Drink two or three cups of green tea a day and eat an orange daily. The vitamins in tea leaves and oranges protect us from radiation and keep our eyes healthy as well.
3. Use a screen filter(过滤器) for your monitor.
4. Avoid having metal objects nearby on your desk.
5. Put the back of the computer to the wall. Most of the radiation comes off the back.
6. Keep your monitor at least 50 cm away from your face.
7. Keep your computer rooms ventilated(空气流通的).
8. Eat healthily---especially fruits and vegetables.
9. Don’t fall asleep on your computer. Turn it off if you have to rest nearby.
The ways above are useful, why not have a try at once?
| Ways to reduce |
|
| Symptom(症状) affected by computers |
Feeling sleepy, forgetful and |
| A safe amount of radiation |
|
| The radiation a mouse gives off |
|
| There are |
With all-glass window from floor to ceiling, sitting five meters below the surface of the Indian Ocean, this is the amazing underwater restaurant in Maldives(马尔代夫). In the restaurant, guests can enjoy the beauty of the ocean without getting their feet wet.
Set under the crystal-clear blue water, the restaurant is so bright that diners and staff are asked to wear sunglasses. The restaurant has 14 seats, and the cost for dinner is 190 pounds (about 1,993 RMB) per person.
The name of the restaurant is Ithaa--- meaning “ Mother of pearl” in local language. This year, the New York Daily News rated (评价)it “ The most beautiful restaurant in the world”.
Chicago is the third largest city in the USA. Many people from all over the world have migrated(移居) to Chicago. They come by train, plane or boat to live in this great city.
Chicago Loop is the central business district. You can see many tall buildings here. Some of them are the tallest buildings in the world.
When you travel around Chicago Loop, you can see many communities of different cultures.
When you go to the south of Chicago Loop, you can find places like Chinatown. There people from China celebrate many traditional Chinese festivals in their own ways.
Chicago is also called the Windy City, so don’t forget to take more clothes with you.How much meters below the sea is the restaurant?
Where is the central business district?
How do people from China celebrate many traditional Chinese festivals?
What is the other name of Chicago?
What is Ithaa, a restaurant or a community?
Why are your study habits different from those of your friends? Why do you seem to learn faster in some classes while more slowly in others? One reason you may not know is that people have different learning types. Scientists say there are three different learning types： Visual, Auditory and Kinesthetic(动觉型).
Visual learners learn best by seeing. If you seem to easily remember information from pictures, graphs(图表) and videos, you are probably a visual learner. You are not good at copying down what the teacher says in class. Never mind. You can draw graphs or pictures instead, if you find that works better for you.
Auditory learners learn best by hearing. If you seem to easily remember things by hearing them, then you are probably an auditory learner. You must listen carefully while the teacher is speaking because it’s the easiest way for you to learn. Sometimes you may find that taking notes stops you from listening carefully. After class, you can write down what you remember or borrow your friends’ notes to copy.
Kinesthetic learners learn best by doing. If you seem to learn best by working with your hands, you are probably a kinesthetic learner. Taking notes by writing can make you pay close attention to information as you receive it. Of course, you can learn best by making full use of labs or other class activities.
Hope you learn better by knowing what your personal learning type is.The meaning of “Visual” is ___________________.
| A．感观型 | B．视觉型 |
| C．听觉型 | D．动觉型 |
How can a visual learner remember information?
| A．By listening to the teachers. |
| B．By writing down what the teachers say. |
| C．By drawing graphs or pictures. |
| D．By working with his hands. |
Judy can remember the words of a song quickly by listening to it once or twice. She might be a/an_________ according to the passage.
| A．auditory learner | B．visual learner |
| C．strange learner | D．kinesthetic learner |
Kinesthetic learners can put ___________________ to good use.
| A．libraries | B．classrooms |
| C．labs | D．offices |
The best title of the passage may be ____________________.
| A．Study habits | B．Ways to study |
| C．Learning types | D．Reasons to learn |
MIT ( Massachusetts Institute of Technology) (美国麻省理工学院) is a world-class university mainly in math, science and technology, but you may be surprised to learn that MIT sets arts courses.
MIT believe in the passion (激情) of learning, the value of working and teaching methods. MIT’s teaching power is quite strong. There are eight Nobel winners and many other national and international winners in the teacher group of MIT. MIT is proud of these top scholars and thinkers.
The ratio (比例) of teachers and students in MIT is about 1 to 7.5. About 63 percent of the classes have fewer than 20 students each. Only 4 percent of the classes have more than 100 students each. Most MIT students can learn courses that they like.
The students in MIT have many activities when they finish their lessons, for example：
Student Life And Culture
Student Organizations
Music & The Arts @ MIT
Athletics
Most students in famous universities feel serious pressure both in life and study. In MIT the students have the same pressure which encourages them to have to study hard. But MIT usually gives one year for the new students to adjust (调节) to the transition (转变；过渡时期). In their first term all the new students are graded by a test. In this test if he or she receives a C or the level better than C, his or her result will be kept forever. If she or he receives a D or an F, no record will be kept. Which courses are well-known in MIT?
| A．math | B．science |
| C．technology | D．all above. |
How many scholars won the Nobel Prize in MIT?
| A．5 | B．6 | C．7 | D．8 |
According to the passage, which of the following is True?
| A．In MIT no arts courses are set. |
| B．The students in MIT have fewer quite relaxed in study. |
| C．Most classes in MIT have fewer than 20 students each. |
| D．There is a hard period for the new students in MIT to get used to the studying in MIT. |
What’s the policy for the new students in MIT?
| A．They need to study hard or they can’t study in MIT any more. |
| B．They are given a chance to get used to the study style in MIT. |
| C．They must get at least a B in all courses. |
| D．If they get a D, the result will be recorded in MIT forever. |
Which of the following is NOT the activities for the life of the students in MIT?
| A．Student Organizations | B．Student Life And Culture |
| C．Music & the Arts @ MIT | D．Heaven of Dance |
The world lost one of the most respected leaders. Nelson Mandela, the former (前任的) South African president, passed away on Dec. 5, 2013. The whole world felt sorry about the death of Mandela, a great man of history.
Mandela is mostly remembered for his efforts to end apartheid(种族隔离) in South Africa. Mandela was born in 1918. In South Africa, there are both black and white people. But at that time, Black people couldn’t live or travel where they wanted. They didn’t have the right to vote, either. Mandela didn’t think that was right.
He organized many activities against it, but he was sent to prison for 27 years. Under international pressure, the government set Mandela free in 1990. Great changes in the law began to end apartheid. At that time, Mandela chose to forgive his enemies. He shook hands with the people who wanted him dead. He also encouraged black people to forgive the whites.
Because of his forgiveness, Mandela is remembered as a moral model(道德楷模) by the whole world.
In1993,Mandela won the Nobel Peace Prize. A year later, he became the first black president of South Africa.
Both black people and white people voted. Apartheid ended. In 1999, Mandela left office at the highest point of his power.The former South African president was _______years old when he died.
| A．80 | B．90 | C．95 | D．85 |
Mandela was sent to prison for 27 years because he ______________________.
| A．chose to forgive his enemies. |
| B．encouraged black people to forgive whites |
| C．shook hands with enemies |
| D．organized many activities against apartheid |
In 1993, Mandela won the Nobel Prize for ________________.
| A．physics | B．peace |
| C．chemistry | D．literature |
Mandela was remembered by the whole world as ________________.
| A．a president | B．a leader |
| C．a moral model | D．an officer |
Which statement is Right according to the passage?
| A．The government set Mandela free in 1990. |
| B．Mandela became the black president in 1993. |
| C．Mandela won the Nobel Peace Prize in 1994. |
| D．Mandela left office at the highest point of his power in 1996. |