问题
选择题
小林患了夜盲症，一到黄昏就看不清东西。他应该吃含哪种维生素丰富的食物？
A．维生素D
B．维生素C
C．维生素B1
D．维生素A
答案
答案：A
维生素A的缺乏症：夜盲症、皮肤干燥，维生素B的缺乏症：脚气病、神经炎，维生素C的缺乏症：坏血病，维生素D的缺乏症：佝偻病、骨质疏松症。
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小林患了夜盲症，一到黄昏就看不清东西。他应该吃含哪种维生素丰富的食物？
A．维生素D
B．维生素C
C．维生素B1
D．维生素A
答案：A
维生素A的缺乏症：夜盲症、皮肤干燥，维生素B的缺乏症：脚气病、神经炎，维生素C的缺乏症：坏血病，维生素D的缺乏症：佝偻病、骨质疏松症。
Somebody says ,‘‘Time is money.” But I think time is important than money. Why do I think so? Because when money is over, we can get it back. But when time is it’ll never .That’s we shouldn’t waste time. It goes with saying that the is usually limited. Even a second is very important .We should make full use of our time to do useful. But a lot of people do not know the importance of time. It is a pity. They spend their limited time smoking, drinking, sleeping and . They do not know that wasting time means wasting part of their own . In a word, we should save time. We shouldn’t today’s work for tomorrow. Please remember that we have no time to .
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