单选题
The "chronic reference doses" (in boldface in Paragraph 3) refer to ______.
A、
the safe levels of pesticide exposure
B、
the amount of fruits one can safely eat
C、
one's digestive capacity for fruits
D、
health values of fruits and vegetables
【正确答案】
A
【答案解析】
由Used appropriately, these levels represent the maximum amount of pesticide that could be consumed daily for life without concern可知正确答案是A(杀虫剂接触量的安全剂量)。
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