题目信息
Which of the following most logically completes the argument?
Although the pesticide TDX has been widely used by fruit growers since the early 1960's, a regulation in force since 1960 has prohibited sale of fruit on which any TDX residue can be detected. That regulation is about to be replaced by one that allows sale of fruit on which trace amounts of TDX residue are detected. In fact, however, the change will not allow more TDX on fruit than was allowed in the 1960's, because ______.
A:pre-1970 techniques for detecting TDX residue could detect it only when it was present on fruit in more than the trace amounts allowed by the new regulations
B:many more people today than in the 1960's habitually purchase and eat fruit without making an effort to clean residues off the fruit
C:people today do not individually consume any more pieces of fruit, on average, than did the people in the 1960's
D:at least a small fraction of the fruit sold each year since the early 1960's has had on it greater levels of TDX than the regulation allows
E:the presence of TDX on fruit in greater than trace amounts has not been shown to cause any harm even to children who eat large amounts of fruit
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A:pre-1970 techniques for detecting TDX residue could detect it only when it was present on fruit in more than the trace amounts allowed by the new regulations
60年代的旧法规不允许有农药残留； 现在新法规允许有残留； 但这并不会使得现在的农药残留比60年代多； A：70年代之前的探测技术不发达，只有在农药残留的量多于现在所规定的量的时候才能被检测到；正确； B：更多人买水果，与农药残留多少无关； C: 水果的消费量，无关； D：从1960年开始至少有一小部分的水果农药残留物是比政府规定的高；无关！讨论的是农药的残留量，与是否有超标这类违规现象无关； E：残留的危害，无关
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