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0A computer programme can identify breast cancer from routine scans with greater accuracythan human experts.Researchers said they hoped this could prove a breakthrough in the fightagainst the global killer.Breast cancer is one of the most common cancers in women all over the world,with morethan 2 million new diagnoses last year alone.Whether breast cancer is severe is closely related tothe time of diagnosis.Therefore,the regular examination is vital in detecting the earliest signs ofthe disease in patients who show no obvious symptoms.In Britain,women over50 are advised to get a mammogram(乳房X光检查)every threeyears,the results of which are interpreted by two independent experts in order to reduce errors indiagnosis.But interpreting the scans leaves room for error,and a small percentage of allmammograms either return a false positive-misdiagnosing a healthy patient as having cancer orfalse negative-missing the disease as it spreads.Now researchers at Google Health have trained an artificial intelligence model to detectcancer in breast scans from thousands of women in Britain and the United States.The images hadalready been reviewed by doctors in real life but unlike in a clinical setting,the machine had nopatient history to inform its diagnoses.The team found that their AI model could predict breast cancer from the scans with a similaraccuracy level to expert radiographers,who are trained to take X-rays.Further,the AI showed areduction in the percentage of cases where cancer was incorrectly identified-5.7 percent in the USand 1.2 percent in Britain,respectively.It also reduced the percentage of missed diagnoses by 9.4percent among US patients and by 2.7 percent in Britain."The earlier you identify a breast cancer,the better it is for the patient."Dominic King,UKleading scientist at Google Health,told AFP."We think about this technology in a way thatsupports and enables an expert,or a patient ultimately,to get the best outcome from whateverdiagnostics(诊断法)hey've had,.”32.What do we learn about breast cancer?A.It has become the top killer of all cancersB.It is typical for two doctors to analyze the scans together.C.The program has succeeded in the fight against breast cancer.D.Its seriousness is strongly connected with the time of its diagnosis.33.Which of the following is NOT an advantage of the artificial intelligence model?A.A lower percentage of missed diagnoses.B.A smaller percentage of mistakenly identified cases.C.No errors in mammograms being returned in a false result.D.No requirement for patient history to inform its diagnoses.英语试题第5页(共12页)
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