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Dear headmaster,

We have been asked about our opinions on opening iPad classrooms. I¡¯m in favor of the plan. The reasons are as follows.

____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

Yours,

Li Hua

¡¾´ð°¸¡¿Dear Headmaster,

We have been asked about our opinions on opening iPad classrooms. I am in favor of this plan for the following reasons. To begin with, everyone learns differently. Students can customize their iPad with materials that fit their level and learning style, and thus tailor it to different needs. Moreover, when connected to the Internet, students can interact with teachers and classmates about what they learn more conveniently. For the sake of environmental protection, opening iPad classrooms is a good way to save trees that we have been cutting down for paper. Most importantly, I believe students will develop their interests in the subjects by enjoying a new way of learning.

I hope you would take my ideas into consideration and we look forward to attending an iPad class.

Yours sincerely,

Li Hua

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¡¾ÌâÄ¿¡¿ Scientists may have found a way to reduce shortage of type O blood. Type O is the kind of blood that hospitals most often need. What the researchers are testing is an easier way to make type O blood out of other kinds of blood.

There are four main kinds of blood. Most people born with one of these four: Type A,Type B, Type AB or Type O. Type O can be safely given to anyone. So it is commonly used when a person is injured or sick and has to have blood.

The differences among blood types are linked to whether or not red blood cells contain certain kinds of sugar molecules(·Ö×Ó). These molecules are found on the surface of the cells.They are known as antigens (¿¹Ô­). These antigens are found with type A, B and AB blood but not with type O.

More than twenty-five years ago, scientists found that the antigens could be removed to create what they called universal-type cells. They could be removed with chemicals called enzymes(ø). But large amounts of enzymes were required to make the change.

Doctor Henrik Clausen of the University of Copenhagen in Denmark led the study. The next step, he says, is to complete safety tests. The team is working with the American company ZymeQuest to test the new method. If it meets safety requirements(*k)and is not too costly,it could become a widely used life-saving tool to increase the supply of universal blood.

¡¾1¡¿How do scientists deal with the problem of lacking type O blood?

A.Hope more people to donate type O blood.

B.Make the most of the present type O blood.

C.Develop new ways of using type O blood.

D.Make type O blood out of other kinds of blood.

¡¾2¡¿What make people have different kinds of blood?

A.Sugar molecules in red blood cells.

B.People's different living conditions.

C.Peoples various immune systems.

D.The variety of peoples cells and genes.

¡¾3¡¿What can we infer from the text?

A.Type O blood can be safely given to anyone

B.Antigens could easily be removed to create universal blood.

C.A Danish company wanted to involve itself in studying blood.

D.The new method is not safe enough to be put into use in hospitals now.

¡¾4¡¿What is the best title for the text?

A.Four different kinds of blood

B.A new way to make type O blood

C.The latest research on blood type

D.Find the proper type of blood

¡¾ÌâÄ¿¡¿Directions: After reading the passage below, fill in the blanks to make the passage coherent and grammatically correct. For the blanks with a given word, fill in each blank with the proper form of the given word; for the other blanks, use one word that best fits each blank.

Today, Mandatory(Ç¿ÖƵÄ) recycling is a hard sell in the United States, where the economy runs largely along free market lines and the current landfilling waste remains inexpensive and efficient.

Plain and simple, recycling still costs more than landfilling in most places. This fact, ¡¾1¡¿(couple) with the disappearance of the so-called ¡°landfill crisis¡± of the mid-1990s, means that recycling has not caught on, which runs ¡¾2¡¿ some environmentalists¡¯ wishes.

However, many cities have found ways to recycle economically. They have cut costs by automating sorting and processing. They¡¯ve also found profitable markets for the recyclables(¿É»ØÊÕÎï) ¡¾3¡¿ cast-off items are acceptable or even welcome. Increased efforts by green groups ¡¾4¡¿(educate) the public about the benefits of recycling have also helped.

¡¾5¡¿ uneconomical recycling seems to some people, some cities, such as Pittsburgh, San Diego and Seattle, have made recycling mandatory. In these cities, recyclables are banned from both household and business garbage. Families ¡¾6¡¿ recycle all basic recyclables, such as paper, cardboard, glass and plastic. To businesses with garbage containers ¡°polluted¡± with more than 10 recyclables£¬warnings ¡¾7¡¿(issue). If they fail to take action, fines are expected.

New York, a national leader on recycling, decided to stop its least cost-effective recycling programs (plastic and glass) in 2002. But rising landfill costs ate up the $39 million savings expected.

As a result, the city brought back plastic and glass recycling and committed to a 20-year contract with a recycling firm, Hugo Neu Corporation, which built the ¡¾8¡¿(advanced) recycling facility in the country.

The company focuses on ¡¾9¡¿could cut costs. Automation has streamlined the sorting process, and easy access to rail has cut both the environmental and transportation costs. The new deal and new facility have made recycling efficient for the city and its residents, ¡¾10¡¿(show) once and for all that responsibly-run recycling programs can actually save money, landfill space and the environment.

¡¾ÌâÄ¿¡¿ Alabama: Priester¡¯s Pecans

Dessert in the South basically starts and ends with an ooey-gooey pecan (ºËÌÒ) pie. Especially in Alabama, where the pecan is the official state nut. While there are plenty of farms that pick and package pecans, perhaps the most famous is Priester¡¯s, a family-run business that¡¯s been supplying Alabama with its favorite nuts for over seven decades.

Alaska: Salmon jerky

Forget beef jerky (Èâ¸É) - in Alaska, it¡¯s all about the salmon jerky. Home to five different species of the flavorful fish (king, red, pink, silver, and chum), the northernmost state produces nearly one-third of the wild salmon consumed around the world. Bonus: Salmon is one of the seven healthiest fish you can eat.

Arizona: Saguaro cactus

The largest cactus (ÏÉÈËÕÆ) in the United States, the saguaro cactus is found only in Arizona¡¯s Sonoran Desert. Living to be up to 200 years old, the cacti, whose flower is also the state¡¯s flower, are generally around 30 feet tall and can grow unlimited arms. Want to see for yourself? Visit one of these 10 outstanding desert escapes in America.

California: Wine Guide

It isn¡¯t called ¡°Wine Country¡± for no reason. Northern California, specifically Napa Valley and Sonoma Valley, produce over 60,000 registered wine labels, making vino (¾ÆÀà²úÆ·) the state¡¯s most valuable agricultural product. If you¡¯re looking for the most popular varietals (ÓÅÖÊÄð¾ÆÆÏÌÑÖ­)£¬the top two frequently planted grapes are chardonnay and cabernet sauvignon.

¡¾1¡¿How long has the Priester¡¯s farm lasted?

A.About 7 years.B.About 30 years.

C.About 70 years.D.About 200 years.

¡¾2¡¿Which state is famous for salmon?

A.Alaska.B.Arizona.

C.Alabama.D.California.

¡¾3¡¿Where does the text probably come from?

A.A library guide.B.A news report.

C.A project handbook.D.A travel guide.

¡¾ÌâÄ¿¡¿Londoners are great readers. They buy vast numbers of newspapers and magazines and even of books¡ªespecially paperbacks, which are still comparatively cheap in spite of ever-increasing rises in the costs of printing. They still continue to buy ¡®proper¡¯ books, too, printed on good paper and bound between hard covers.

There are many streets in London containing shops which specialize in book-selling. Perhaps the best known of these is Charing Cross Road in the very heart of London. Here bookshops of all sorts and sizes are to be found, from the celebrated one which boasts of being ¡®the biggest bookshop in the world¡¯ to the tiny, dusty little places which seem to have been left over from Dickens¡¯ time. Some of these shops stock, or will obtain, any kind of book, but many of them specialize ¡ª in second-hand books, in art books, in foreign books, in books on philosophy(ÕÜѧ), politics or any other of the myriad subjects about which books may be written. One shop in this area specializes solely in books about ballet.

Although it may be the most convenient place for Londoners to buy books, Charing Cross Road is not the cheapest. For the really cheap second-hand volumes, the collector must venture(ðÏÕ) off the beaten path, to Farringdon Road, for example, in the East Central district of London. Here there is nothing so grand as bookshops. Instead, the booksellers come along each morning and tip out their sacks of books on to small barrows(ÊÖÍƳµ) which line the gutters(ƶÃñÇø). And the collectors, some professional and some amateur(ÒµÓà°®ºÃÕß)have been waiting for them. In places like this one can still, occasionally, pick up for a few pence an old volume that may be worth many pounds.

¡¾1¡¿According to the passage, we can infer that __________.

A. Londoners like borrowing books from libraries

B. Londoners like buying books, magazines and newspapers

C. Londoners like reading books in libraries

D. Londoners don't like buying ¡®proper¡¯ books.

¡¾2¡¿Charing Cross Road which is well-known for ________ lies in the __________ of London.

A. bookstores, East Central district B. publishing houses, downtown

C. Bookshops, center D. libraries, countryside

¡¾3¡¿The underlined word ¡°solely¡± in the second paragraph means__________.

A. wholly B. partly

C. jointly D. seldom

¡¾4¡¿The third paragraph mainly tells us _________in London.

A. where to buy the dear new books

B. where to buy the cheap new books

C. where to buy the cheap second-hand books

D. where to buy the dear second-hand books

¡¾ÌâÄ¿¡¿Economy rebounding after drop

China's economy experienced a deep reduction in the first quarter due to the novel coronavirus outbreak. ¡¾1¡¿. This indicates that the country's recovery has gained a firmer footing, officials and economists said on Friday.

¡¾2¡¿. However, it remains unclear whether the government will still set a GDP growth target for the year. Economists said China's policy for the next step needs to focus on stimulating(´Ì¼¤) demand and stabilizing(Îȶ¨)employment to promote economic recovery.

Mao Shengyong, NBS spokesman, said the outbreak created a serious blow to the country's economy in the first quarter, but major economic indicators(Ö¸±ê) rebounded in March.¡¾3¡¿.

Lian Ping, chief economist at Zhixin Investment, said the government needs to strengthen policy support to prevent the economy from suffering a second wave of blows from the global economic downturn. ¡¾4¡¿. While most large companies have resumed production, according to NBS calculations, many smaller companies are still struggling to resume work under rising financial difficulties and labor shortages.

Retail sales dropped by 19 percent year-on-year in the first quarter, which indicated that domestic demand remains relatively weak and there is still room for policies to effectively boost households' consumption(Ïû·Ñ), economists said. ¡¾5¡¿. The urban unemployment rate was 5.9 percent in March, down by 0.3 percentage point from February, according to the NBS.

A.Urban household income declined by 3.9 percent year-on-year in the first quarter.

B.But major economic indicators improved mostly in March.

C.China's GDP in the first quarter contracted by 6.8 percent from a year earlier according to the National Bureau of Statistics.

D.Chinese economy is recovering as more companies are borrowing to promote their production recovery.

E.And the country's economic performance will improve further in the second quarter.

F.Chinese companies, including exporters, have seen an increase in cancellations(È¡Ïû) of orders.

G."More support needs to be given to households as the decline(Ͻµ) of residents' income

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China's research icebreaker Xuelong, ¡¾1¡¿126 crew members aboard on the 35th Antarctic research mission, on Thursday local time left the Zhongshan Station on ¡¾2¡¿ (it) way back to China.

Snow Eagle 601, China's first fixed-wing aircraft for polar flight, on Thursday night also departed from the Antarctic after ¡¾3¡¿(complete)all assignments.

Xuelong, ¡¾4¡¿ arrived near Zhongshan on Feb 9, supplied the station with fuel oil, and then picked up summer expedition team members at the Kunlun, Taishan and Zhongshan stations, as well as ¡¾5¡¿ (member)of the fixed-wing aircraft project.

Sixteen members of the Kunlun team ¡¾6¡¿( previous) completed all scientific expeditions at Dome Argus (Dome A), the South Pole's highest icecap. They, together with 21 members of the Taishan team, ¡¾7¡¿ (return) to Zhongshan on Feb 8.

The Zhongshan team completed tasks including installation of and tests for LiDAR, drilling of ice bed rock, atmospheric sounding ¡¾8¡¿(observe), surveys of birds and aerial exploration carried out by the fixed-wing aircraft.

As the summer expedition team at Zhongshan left, 19 members would stay for winter expeditions.

Also ¡¾9¡¿ (know£© as the Snow Dragon, the icebreaker carrying a research team set sail from Shanghai on Nov 2 last year, beginning ¡¾10¡¿country's 35th Antarctic expedition. It is expected to arrive in Shanghai in mid-March.

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