【正文】 n with to m uch m oney has m ore rather than fewer troubls. H e therefore gives mi l i ons of Yuan to equip others for their research i n agri cul ture. Just dreami ng for thi ngs, however, costs nothi ng. Long ago Dr Yuan had a dream about ri ce pl ants as tal l as shum . Each ear of ri ce was as bi g as an ear of corn and each grai n of ri ce was as huge as a peanut. Dr Yuan awoke from hi s dream wi th the hope of producing a ki nd of ri ce that coul d feed m ore peopl e. Now, m any years l ater, Dr Yuan has another dream : to export his ri ce so that i t can be grown around the gl boe. O ne dream i s not al ways enough, especi al ly for a person who l oves and cares for hi s peopl e. Chemi cal or ani c farm i ng? Over the past hal f century, usi ng chem i cal ferti li zers has ve e very mon i n farm i ng. Many farm ers wel ed them as great way to stop crop di sease and i ncrease producti on. Recentl y, however, sci enti sts have been fi ndi ng that l ongterm use of these fertil i zers can cause damage to the l and and, even more dangerous, to people?s heal th. What are som e of the probl ems caused by chem ical fertil i zers? First, they damage the l and by ki l ing the hel pful bacteria and pests as wel l as the harm ful ones. Chemi cal s al so stay i n the ground and underground water for a l onog tim e. This afects crops and, therefore, anim al s and hum ans, si nce chemi cal s get i nsi de the crops and cannot just be washed off. These chem i cal s i n the food suppl y buil d up i n peopl e?s bodi es over tim e. Many of these chemi cal s can l ead to cancer or other il nesses. In addi ti on, frui t, vegetabl es and other food grown wi th chem i cal ferti li zers usual y grow too fast to be ful l of m uch nutri ti on. They m ay l ook beauti ful , but i nsi de there is usual ly m ore water than vitamins and mi neral s. With these discoveri es, some farmers and many custom ers are begi nning to turn to anic farmi ng. O rgani c farming is si mply farmi ng wi thout usi ng any chemical s. They focus on keepi ng their soi l ri ch and free of disease. A healthy soil reduces disease and hel ps crops grow strong and heal thy. O rgani c farm ers, therefore, often prefer usi ng natural waste from anim al s as fertil izer. They feel that thi s makes the soi l in thei r fiel ds richer i n mi neral s and so m ore fertil e. This al so keeps the ai r, soil , water and crops free from chemi cal s. O rgani c farmers also use m any other methods to keep the soil fertil e. They often change the knd of crop in each fiel d every few years, for exampl e, growi ng corn or wheat and then the next year peas or soybeans. Crops such as peas or soybeans put i mportant minerals back into the soil , making it ready for crops such as wheat or corn that need ri ch and ferti l e soi l . O rgani c farm ers al so pl ant crops to use di fferent l evel s of soi l , for exam pl e, pl anti ng peanuts that use the ground?s surface fol l owed by vegetabl es that put down deep roots. Som e ani c farm ers prefer pl anti ng grass between crops to prevent wi nd or water from carryi ng away the soi l , and then l eavi ng i t i n the ground to be e it?s to col d. ” The m an l aughed. “My nam e i s Sim on and I am Inuit,” he sai d. “I think i t?s too far north here for holi days but m ore and m ore touri sts are i ng. They l ike i ce fi shi ng and photographi ng pol ar bears. I star as far away from pol ar bears as possi bl e. I li ke m y warm ofi ce and my warm house. ” “I?m busi ness m an. My grandfather woul d l i ve i n i ce houses when he hunted i n wi nter, but not so m any peopl e do that now. the ol d m en used to m ake one i n a few hours. They used to li ve i n ski n tents i n sum mer – the tents were easy to m ove so the peopl e coul d fol ow the ani mal s. ” A few mi nutes l ater they arri ved i n Iqal ui t, a town wi th a popul ati on of 6000, on Si mon?s snowm obi l e. It was two o?cl ock i n the afternoon, but i t was al ready dark, and al the houses shone wi th bri ght l i ghts. Beth sai d, “ Why i s i t so dark? It?s the mi ddl e of the day!” Si mon repli ed, “It?s dark i n the day because we are so far north. You shoul d e in June. The sun shi nes al ni ght i n the north then. That39。s why i t?s cal ed ?The Land of the Mi dni ght Sun?. ” There were peopl e on the streets and snowmobil es everywhere. There were even a few dog team s. 必修四 Uni t 1 A STUDEN T O F AFRICAN WILDLIFE It is 5: 45 am and the sun i s just risi ng over Gom be N ati onal park in east Africa. Fol lowing Jane?s way of studying chimps,our group are al l going to visit them in the forest. Jane has studi ed these fami li es of chim ps for m any years and hel ped peopl e understand how m uch they behave li ke hum ans. Watchi ng a fami lyof chim ps waki ng up i s our fi rst acti vity of the day. Thi s m eans goi ng back to the pl ace where we l eft the fami ly sl eepi ng i n a tree the ni ght before. Everybody si ts and wai ts i n the shade of the trees whil e the famil y begi ns to wake up and m ove off. Then we fol ow as they wonder i nto the of the tim e, chim ps ei ther fed or cl ean each other as a way of showi ng l ove i n their fami l y. Jane worns us that our grou i s goi ng tobe very ti red and dirty by the afternoon and she i s ri owever, the eveni ng makes i t al worthwhil e. We watch the m other chi mpand her babi es pl ay i n the tree. Then we see them go to sl eep together i n thei r nest for the ni ght. We real i ze that the bond between m em bers of a chim p fam il y i s as strong as i n a human fami l y. N obody before Jane ful y understood chim p behavi our. She spent years observi ng and recording thei r dai l y acti viti es. Since her chi l dhood she had wanted to work wi th anim al s i n their own envi ronm owever, this was not easy. When she fi rst arri ved i n Gom be i n 1960, i t was unusual for a wom an to l ive i n a forest. O nl y after her mothe