单选题Only one of the following statements is false, according to what was said. Which one is it?AResearchers said estimates of atomic bomb survivors' radiation doses are accurate.BDoubts about the accuracy of methods used to collect exposure data in 1945 prompted the review.CThe earlier methods were unable to detect radioactive fallout because the researchers could not get close to the bomb site.DThe amount of nickel in each copper sample can be correlated to the intensity of radiation exposure at the site.
单选题
Only one of the following statements is false, according to what was said. Which one is it?
A
Researchers said estimates of atomic bomb survivors' radiation doses are accurate.
B
Doubts about the accuracy of methods used to collect exposure data in 1945 prompted the review.
C
The earlier methods were unable to detect radioactive fallout because the researchers could not get close to the bomb site.
D
The amount of nickel in each copper sample can be correlated to the intensity of radiation exposure at the site.
参考解析
解析：
录音首句便指出“对原子弹（atomic bomb）幸存者体内辐射含量（radiation doses）的估测是正确的”，接着提到“对1945年收集数据方法的准确度的怀疑促使了这次的重新估测”，因此选项C内容有误。
【录音原文】
Estimates of atomic bomb survivors’ radiation doses—the basis for current radiation exposure safety standards—are accurate, researchers said Thursday. Doubts about the accuracy of methods used to collect exposure data in 1945, immediately after the bombings in Hiroshima and Nagasaki, prompted the review. The earlier methods were unable to detect radioactive fallout more than a half-mile from each bomb site. The scientists examined copper samples from Hiroshima buildings for trace amounts of a radioactive nickel isotope produced by the atomic bomb explosion. The amount of nickel in each copper sample can be correlated to the intensity of radiation exposure at the site from which the sample was taken.
录音首句便指出“对原子弹（atomic bomb）幸存者体内辐射含量（radiation doses）的估测是正确的”，接着提到“对1945年收集数据方法的准确度的怀疑促使了这次的重新估测”，因此选项C内容有误。
【录音原文】
Estimates of atomic bomb survivors’ radiation doses—the basis for current radiation exposure safety standards—are accurate, researchers said Thursday. Doubts about the accuracy of methods used to collect exposure data in 1945, immediately after the bombings in Hiroshima and Nagasaki, prompted the review. The earlier methods were unable to detect radioactive fallout more than a half-mile from each bomb site. The scientists examined copper samples from Hiroshima buildings for trace amounts of a radioactive nickel isotope produced by the atomic bomb explosion. The amount of nickel in each copper sample can be correlated to the intensity of radiation exposure at the site from which the sample was taken.
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