lighter babies than those who don't
heavier babies than those who don't
babies who can't live long
babies who suffer from heart diseases
第1题:
第2题:
第3题:
On (平均),people who don’t smoke are healthier than people who do.
第4题:
第5题:
第6题:
第7题:
第8题:
On________ (平均),people who don’t smoke are healthier than people who do.
第9题:
第10题: