Training for a marathon requires careful preparation and steady, gradual increases in the length of the runs.{#blank#}1{#/blank#}, buy the best-fitting, best-built running shoes you can find. No one can say which brand will work best for you or feel best on your feet, so you have to rely on your experience and on the feel of each pair as you shop. When you have found shoes that seem right, walk in them for a few days to double-check the fit.{#blank#}2{#/blank#}.As always, you should stretch(仲展) at least ten minutes before each run to prevent injuries.

    During the first week, do not think about distance, but run five minutes longer each day.{#blank#}3{#/blank#} it is wise to take a day off to rest. But during the next week, set a goal of at least a mile and a half per run.{#blank#}4{#/blank#}.After two weeks, start timing yourself. {#blank#}5{#/blank#}.Depending on the kind of race you plan to enter, you can set up a timetable for the remaining weeks before the race.

A. After six days

B. For a good marathon runner

C. Before you begin your training

D. With each day, increase the distance by a half mile

E. If they still feel good, you can begin running in them

F. Time spent for preparation raises the quality of training

G. Now you are ready to figure out a goal of improving distance and time

SHEFFIELD

LINCOLN COLLEGE OF ENGLISH

Classes for foreign students at all levels

3 months, 6 months, 9 months and one year course

Open all year

Small class (maximum 12 students)

Library, language laboratory and listening center

Accommodation(膳食供应) with selected families

25 minutes from London

Course fees for English for one year are ￡1, 380 with reduction 减少for shorter periods of study.

    Nowadays people are facing lots of threats（威胁）all over the world.

   A serious threat to farmers in many parts of the world is erosion（侵蚀）.Erosion happens if a large area of land is cleared of trees and is then badly treated by the farmers.The rain and winds may gradually wash away,or blow away much of the topsoil.When this happens,crops of wheat and corn become weaker and weaker until nothing grows well.If erosion continues,it will turn good land into a desert.

    In the past,when erosion appeared,farmers sometimes moved to a new place to farm.Sometimes they could not move,but continued to try to grow food in the unhealthy soil.This caused them to sink into poverty.Soon some people realized that there was little rich,fertile soil in the world.The government began to try to stop erosion.

    One of the first experiments to stop erosion began in the United States in 1933.The experiment was carried out in the area of the Tennessee River.Flood and bad farming in this area had ruined the land that had once been rich.As a result,most of the people living around the Tennessee River were very poor.

The government built big dams across the river and stored the water for use during the dry season,when there was no rain.The government workers also helped the farmers fertilize their soil and to learn new farming methods which could stop erosion.

    In the beginning,the farmers were not interested.But soon,good healthy crops began to appear on the land where new methods were used.Ten years after that the crops were extremely good.The great success of this experiment led to similar projects in other parts of the world.

With the development of science and technology,people are trying to get rid of all the threats they are facing. However,it's not an easy job,because at the same time people are polluting their homeland.

                                                                                       Official Historical Tour of Harvard

    Student-Led Public Walking Tour

    Please note: Due to ongoing construction, our tour schedule will be limited. Please check our updated tour times on the calendar. In the event of bad weather, please check the calendar or call regarding a scheduled tour time.

    The tour is student-led and includes an outdoor walk(please dress appropriately)through Harvard Yard, providing a history of the university, general information, and a unique view on the students' individual experience. The tour is around one hour long, and completely free of charge. There is no pre—registration for general visitors, and we begin registration for each tour one hour before departure time. Currently we are only able to accommodate groups of up-to 14 people on our free, public tour. If you have a group of 15 or more, reservations are required (please see below).

    Group Tours and Reservations

    Reservations are required for tours of 15 or more people, with an absolute maximum of 125 people. We request 2 weeks' notice to schedule a tour. Please note that we cannot accommodate groups that arrive without a reservation.

    A Self-Guided Walking Tour of Harvard Yard

    If you are interested in touring the campus on your own,you may want a self-guided walking tour. These tour pamphlets(册),offered in nine different languages, can be purchased from our office for a minimal charge.

    You may also download audio files of historical information on each of the buildings in Harvard Yard. These files, together including an Audio Tour, can also be obtained here with a simple click.

    The year is 2094. It has been announced that a comet (彗星) is heading towards the Earth. Most of it will miss our planet, but two pieces will probably hit the southern half of the Earth.

    On 17 July, a piece four kilometers wide enters the Earth's atmosphere with a massive explosion. About half of the piece is destroyed, but the remaining part hits the South Atlantic at 200 times the speed of sound. The sea boils and a huge hole is made in the sea bed.  Huge waves are created and spread outwards from the hole. The wall of water, a kilometer high, rushes towards southern Africa at 800 kilometers an hour. Cities on the African coast are totally destroyed and millions of people are drowned.

    Before the waves reach South America, the second piece of the comet lands in Argentina. Earthquakes and volcanoes are set off in the Andes Mountains. The shock waves move north into California and all around the Pacific Ocean. The cities of Los Angeles, San Francisco and Tokyo are completely destroyed by earthquakes. Millions of people in the southern half of the earth are already dead, but the north won't escape for long. Because of the explosions, the sun is hidden by clouds of dust, temperatures around the world fall to almost zero. Crops are ruined. The sun won't be seen again for many years. Wars break out as countries fight for food. A year later, no more than 10 million people remain alive.

    Could it really happen? In fact, it has already happened more than once in the history of the Earth. The dinosaurs were on the Earth for over 160 million years. Then 65 million years ago they suddenly disappeared. Many scientists believe that the Earth was hit by a piece of object in space. The dinosaurs couldn't live through the cold climate that followed and they died out. Will we meet the same end?

    Have you ever run into a careless cell phone user on the street? Perhaps they were busy talking, texting or checking updates on WeChat without looking at what was going on around them. As the number of this new "species" of human has kept rising, they have been given a new name — phubbers（低头族）.

    Recently, a cartoon created by students from China Central Academy of Fine Arts put this group of people under the spotlight. In the short film, phubbers with various social identities bury themselves in their phones. A doctor plays with his cell phone while letting his patient die, a pretty woman takes selfie（自拍照）in front of a car accident site, and a father loses his child without knowing about it while using his mobile phone. A chain of similar events eventually leads to the destruction of the world.

    Although the ending sounds overstated, the damage phubbing can bring is real. Your health is the first to bear the effect and result of it. "Constantly bending your head to check your cell phone could damage your neck," Guangming Daily quoted doctors as saying. "the neck is like a rope that breaks after long-term stretching." Also, staring at cell phones for long periods of time will damage your eyesight gradually, according to the report.

    But that's not all. Being a phubber could also damage your social skills and drive you away from your friends and family. At reunions with family or friends, many people tend to stick to their cell phones while others are chatting happily with each other and this creates a strange atmosphere, Qilu Evening News reported.

    It can also cost you your life. There have been lots of reports on phubbers who fell to their death, suffered accidents, and were robbed of their cell phones in broad daylight.