长期以来，铝一直被认为是无毒元素．但近几年来的研究表明，铝可扰乱人体的代谢作用，
题型：问答题
问题：
长期以来，铝一直被认为是无毒元素．但近几年来的研究表明，铝可扰乱人体的代谢作用，对人体健康造成长期、缓慢的危．可采取哪些措施防止铝中毒（至少答三点）？
题型：问答题
| 阅读理解 | ||||
Birthdays are celebrated(庆祝)all over the world. Some ways to celebrate birthdays are rather similar from county to country: candles, cakes, and birthday wishes. But there are also different ways to celebrate birthdays. Here are a few:
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| 1. When someone is having a birthday in Denmark, you can see _____ outside the window. | ||||
| A. flowers B. presents C. a flag D. a chair | ||||
| 2. In _____flowers are put on the chair of the birthday child. | ||||
| A. Japan B. Denmark C. India D. Holland | ||||
| 3. In _____, only birthday children wear colored clothes to school. | ||||
| A. India B. Holland C. Denmark D. Japan | ||||
| 4. In Japan, the birthday is more important for boys when they are _____. | ||||
| A. 15 B. 7 C. 5 D. 3 | ||||
| 5. The passage is mainly(主要) about _____. | ||||
A. similar ways of celebrating birt hdays in some countriesB. different ways of celebrating birthdays in some countries C. children's birthdays in western countries D. the importance of children's birthdays |
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