问题
选择题
当人体内缺碘时，分泌明显增加的激素是[ ]
A．促甲状腺激素
B．甲状腺激素
C．肾上腺素
D．盐皮质激素
答案
答案：A
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当人体内缺碘时，分泌明显增加的激素是[ ]
A．促甲状腺激素
B．甲状腺激素
C．肾上腺素
D．盐皮质激素
答案：A
完形填空。 Mr. Smith works in New York. Last month he had a fifteen-day holiday, but he didn’t know where to spend it. He spoke to his friend Bill,“I 1 the hot weather, but I can’t find a cool place in America. How should I spend my holiday?” “That’s easy, ” said Bill, “You’d 2 to Moscow. Snow and ice are covering the ground now. ” Mr. Smith agreed 3 his friend. He bought an air ticket and soon 4 Moscow. He had a happy trip there, but one day he 5 . After lunch he went outside the city, he saw a dog 6 him while he 7 past(走过) a house. The dog was hungry and wished him to give it some food to eat. Bad luck! He had no piece of bread or cake in his pockets. He tried to drive it away. But it began to bark at(对……大叫) him. He wanted to look for a stick but he couldn’t find anything 8 snow and ice. Suddenly he saw a stone on the ground. He hurried to 9 but failed. “How strange Russians are!” Mr. Smith said to himself, “They don’t tie dogs, but firmly (紧紧地) 10 the stones. My God!”
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