题目

His talent and charm have made him the No.1Chinese classical artist in the world. And he played in the grand Beijing Olympic opening ceremony in 2008, watched by a TV audience of 5 billion.     Lang Lang, 26, is the first Chinese pianist to play with the world's top orchestras (管弦乐队），making his first appearance at the Carnegie Hall in New York at 18, while still a student.     Lang's charm and fondness for sharp clothes make him a natural fit to represent China's new international image. According to the British newspaper the Times, The Lang Lang effect is responsibl 下列调节过程属于负反馈调节作用的是 A． 人体血糖浓度上升引起胰高血糖素分泌减少 B． 大量猎杀草原食肉动物，导致食草动物的数量上升 C． 寒冷时人体甲状腺激素和肾上腺激素会分泌增加 D． 湖泊受污染后鱼类数量减少，鱼体死亡腐烂进一步加重污染