问题
单项选择题
碘是人体必需微量元素，在无外来含碘的食物下，水碘含量可用于衡量当地居民摄碘量，当饮水碘含量低于多少时，可有碘缺乏病的流行
A．1μg/L
B．5μg/L
C．10μg/L
D．20μg/L
E．50μg/L
答案
参考答案：C
搜题请搜索小程序“爱下问搜题”
碘是人体必需微量元素，在无外来含碘的食物下，水碘含量可用于衡量当地居民摄碘量，当饮水碘含量低于多少时，可有碘缺乏病的流行
A．1μg/L
B．5μg/L
C．10μg/L
D．20μg/L
E．50μg/L
参考答案：C
| 完形填空。 | ||||
| A little boy wanted $100 very badly and his mother told him 1 to God for it. He prayed and prayed for weeks, but 2 turned up. He decided 3 a letter to God and asked 4 the $100. When the postal authorities saw the letter addressed to "God", they 5 it and decided to send (送给) it to the President (总统) , who told his secretary to send the little boy a check for $5. He 6 this would appear to be a lot of 7 for a little boy. The little boy was very happy and sat down to write a 8 to God: Dear God, Thank you very much for 9 me the money. I told you that you had to send it through Washington, D. C. But those jerks (蠢人) deducted (扣除) 10 . | ||||
|