句子反复磨耳朵（高级续）121-125

121.The major result from recent investigations of Emmet's theory has been that it can be applied to biochemistry as well.埃米特理论最近的研究成果已经开始应用于生物化学领域。122.The basis of this system is that the students must take turns in teaching, they have to help each other.这个制度的基础是学生必须轮流教学，他们必须互相帮助。123.Career opportunities, flex-time, satellite offices, and more childcare facilities are required to make women at home join the work force.职业机会、弹性工作时间、远程办公和更多的托儿设施是使在家的妇女加入工作队伍所必需的。124.When bears sleep or lie down, their postures depend on whether they want to get rid of heat or conserve it.当熊睡觉或躺下时，它们的姿势取决于它们是想散热还是取暖。125.A boy and a girl came in. I spoke to the boy, who seemed to be older than the girl.一个男孩和一个女孩进来了。我和那个似乎比女孩年纪大的男孩交谈。