Which of the following does the author cite in support of the quotation from the United Nations Scientific Committee on the Effects of Atomic Radiation？( )Ⅰ.Strontium 90 and carbon 14 become incorporated into the body and deliver radiation for an entire
题目
Which of the following does the author cite in support of the quotation from the United Nations Scientific Committee on the Effects of Atomic Radiation？( )Ⅰ.Strontium 90 and carbon 14 become incorporated into the body and deliver radiation for an entire lifetime.Ⅱ.An abnormally high percentage of patients with arthritis of the spine who were treated with X rays contracted cancer.Ⅲ.A high incidence of cancer appeared among children of mothers who had been given prenatal pelvic X rays.
A.Ⅰ only.
B.Ⅰ，Ⅱ，and Ⅲ.
C.Ⅰ and Ⅱ only.
D.Ⅱand Ⅲ only.
B.Ⅰ，Ⅱ，and Ⅲ.
C.Ⅰ and Ⅱ only.
D.Ⅱand Ⅲ only.
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参考答案和解析
答案：D
解析：
细节题。根据题干关键词United Nations Scientific Committee on the Effects ofAtomic Radiation可定位到第三段。这段列举了Ⅱ和Ⅲ两个例子，D项正确。