单选题
What did all of the additives in bread have in common?
A、
They are all used to keep the bread from getting moldy.
B、
They are all poisons.
C、
They are all organic.
D、
They have all killed laboratory animals.
【正确答案】
B
【答案解析】
[解析] 从第三段可知面包中所用的添加剂都有毒。
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