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英语四级
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把番茄酱在铁锅内熬上三小时，其铁的含量会明显增加。
有时人们还需要服用铁质补剂是因为这些补剂补充了谷类食物中原本含量不多的铁质。
最好的铁质来源是肉，鸡，鱼，枣，豆类以及一些带叶子的绿色蔬菜。
铁质补剂会让人有一种想吐的感觉，有些情况下它们还可能有毒。
属于这些类型的人，最好每年作一次血液检查，看看体内的铁质的储量如何。
男性也不安全，尤其是那些吃肉少，运动量却很大的男性。
仅仅查出运输氧气的血液蛋白的含量是不够的。
大多数缺铁的人并不知道他们缺铁。
为吸引外宾，这些受保护的古代建筑被修复得很漂亮。
他批评警察局长对自己的部门监管不严是完全有道理的。
英语六级
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The teacher was not wrong to draw attention to the errors, but if his priorities had
It may have been a sharp criticism of the pupil’s technical abilities in writing, but
The problem is, how to encourage a child to express himself freely and confidently in
They also learn how to cope with personal problems as well as learning how to think,
A spirited discussion springs up between a young girl who says that women have outgro
The release of the carbon in these compounds for recycling depends almost entirely on
Given the nature of government and private employers, it seems most likely that discr
Since different people like to do so many different things in their spare time, we co
Mathematicians who have tried to use the computers to copy the way the brain works ha
They are trying to find out whether there is something about the way we teach languag
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