根据下列文章,请回答 51～65 题。 New Technique Promises Earlier Cancer Detection a new technique could．revolutionize the early detection of cancer，giving sufferers a greater chance of beating the disease，AmeriCan scientists said．Researchers at the Massachusetts Institute of Technology have devised． A novel method．of ______________(1)changes in the nucleus of cells in the earliest stages of the disease．“More than 85 percent of all cancers originate in the epithelium(上皮)that lines the internal suces of organs_____________ (2)the body．Although these are treatable _____________ (3)they are diagnosed．in one of the prable stages，early body damages are almost__________(4)to detect，”said．scientist Feld．“We present a new optiCal．probe(光学探子)technique based．on light—scattering spectroscopy(分光镜检查)that is able _____________ (5)detect pre—cancerous and．early cancerous cells in cell-riCh epithelia，”he added in a statement． The new technique relies on the fact_____________ (6)cell nuclei change in the early stages of cancer and．the differences scatter light in A characteristic．way．Until now the changes were only detectable_____________ (7)a biopsy(活检)was taken，the scientists said．The new technique，_____________(8)in the science journal Nature，can be used．in conjunction with a routine cancer screening and surveillance technique which uses an endoscope(内窥镜) a flexible optiCal probe_____________(9)with cameras whiCh is inserted．into a cavity in the body—to check_____________(10)cancers． The scientists said．they_____________ (11)their new technique in four different 01'gans during routine endoscope cancer screening．The tip of the optiCal probe was brought into contact with the tissue to be tested．and．the scattering of light was recorded．without the need．for any tissue to be_____________ (12)，the scientists said．“0ur results show that 1ight—scattering spectroscopy has the potential to detect pre—cancerous body damages and．pre—invasive cancers throughout the body．This technique should_________(13)improve the effiCiency of cancer screening and．surveillance，”the scientists said．Cancer is one of the biggest________(14)in industrialized．countries．_________(15)to figures from the World．Health Organization，10 million people were diagnosed．with the disease worldwide in l 997 and．six million died． 第 51 题