问题
单项选择题
Passage Four
According to the passage, what would happen to healthy cells within 48 hours of exposure to radio waves
A．The number of healthy cells will keep declining as more and more of them die.
B．The number of healthy cells will initially drop before recovering rapidly.
C．The number of healthy cells will be on steady increase throughout the process.
D．The scientists have not yet arrived at any conclusion on this issue.
答案
参考答案：D
解析：
[分析]： 事实细节的找寻和判断。 根据题干中的数字信息可迅速定位到原文相关信息处，可知在接受48小时连续辐射后，残余的癌细胞会大量繁殖。在说到健康细胞时，有关科学家说We don’t know what the effects would be on healthy human cells 由此可见，选项D的说法与原文相符，是正确答案。[解题关键] 注意掌握重要人物的引语部分，该部分往往是包含重要的细节信息。