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  3. How many times have the doctors tested the children for five years? [br] Which o

How many times have the doctors tested the children for five years? [br] Which o

游客2025-07-30  0
问题 How many times have the doctors tested the children for five years? [br] Which of the following is NOT true?
选项 A、The mothers’ smoking during pregnancy could have affected the children’s lungs.
B、Doctors are sure that children whose mothers smoked developed 20% more colds, flu and other breathing diseases than other children.
C、Doctors are sure when the mothers’ smoking affected the children’s lungs.
D、Smoke-filled air at home could have affected the children’s lungs.
答案 C
解析 答案选C。根据文章，医生并不确定母亲抽烟到底在什么时候影响了孩子：是在怀孕时呢，还是孩子出生后呢?
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