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Their work shows that one-year-olds are much more likely to have allergies if either parent smokes.他们的研究表明，如果父母中有一人吸烟，一岁婴儿患过敏的可能性就会大大增加。Tests were carried out by teachers on the entire cohort of eight to nine year-olds in their third year at primary school.测试是由老师在小学三年级所有八岁到九岁的学生中进行的。The report attacks the idea of exams for seven and eight-year-olds.这篇报道抨击了对七八岁的孩子进行考试的计划。Miss Himes teaches the youngest class, the four- and five-year-olds.海姆斯小姐教年龄最小的班，都是四五岁的孩子。The games were a little babyish for nine-year-olds.这些游戏对九岁的孩子来说太容易了一点。Eastin is calling for a plan to provide free preschool for all 4-year-olds.伊斯廷正呼吁制定一个计划，为所有四岁的儿童提供免费的学前教育。Almost all two-year-olds have tantrums from time to time.两岁的小孩几乎个个都经常会闹闹脾气。The game is suitable for six-year-olds. 这个游戏适合六岁的孩子玩。Most seven-year-olds are grounded in the basics of reading and writing.大多数七岁的儿童都要接受读写的基本训练。On my first day's teaching, I had a class of highly excitable 5-year-olds.当老师的第一天，我就要教一个十分容易激动的五岁孩子的班级。 |