在下列哪期缺乏碘可引起地方性克汀病（）
A.胎儿期
B.幼儿期
C.儿童青少年期
D.青春发育期
E.青年期
参考答案：A
解析：地方性克汀病endemiccretinism生长发育迟缓；表情呆滞；智力低下；甲状腺肿；便秘。粘液性水肿地方性克汀病（endemiccretinism）多出现在严重的地方性甲状腺肿流行区，该区至少有1／5人群患有甲状腺肿，一般患病率占甲状腺肿地区人口的1～5％，严重地区高达5～10％。本病是胚胎时期和出生后早期碘缺乏与甲状腺功能低下所造成的大脑与中枢神经系统发育分化障碍的结果。
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different people to choose. Some hobbies are very popular, 2_________ others are quite unusual. You may choose one that you are interested 3_________. You may enjoy collecting things such as stamps, stones, foreign 4_________ and so on. If you like to work with your hands, you may enjoy model making and 5_________ cutting, which both need great attention in detail. Or you may 6_________ creative hobbies, like painting and writing. Many people 7_________ outdoor activities to indoor activities. They get great pleasure from 8_________, cycling and so on. which they can enjoy with others. Wherever you live, there 9_________ always a hobby for you to choose. The hobby can help you relax after your daily work. The hobby can give you many hours of pleasure and make your 10_________ time interesting and creative. The hobby can bring you happiness, knowledge and friendship. |