问题
单项选择题
列关于磺脲类降糖作用机制的说法正确的是()
A．发挥作用依赖于尚存一定数量的胰岛B细胞
B．主要靶部位是ATP敏感型钙通道
C．即便有功能的胰岛B细胞仅余10%也可发挥作用
D．高选择性的磺脲类药物对心血管系统的影响也大
E．所有的磺脲类药物均与同一受体结合
答案
参考答案：A
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列关于磺脲类降糖作用机制的说法正确的是()
A．发挥作用依赖于尚存一定数量的胰岛B细胞
B．主要靶部位是ATP敏感型钙通道
C．即便有功能的胰岛B细胞仅余10%也可发挥作用
D．高选择性的磺脲类药物对心血管系统的影响也大
E．所有的磺脲类药物均与同一受体结合
参考答案：A
The widespread number of food scandals(丑闻)in China is making many people pause before they put their chopsticks in their mouths．They are wondering if the food they are eating is clean，healthy and nutritious(营养) or does it contain（包含） something harmful that will cause disease? Most of the food we eat today is processed food(加工食品)．That means the foods we buy in stores and supermarkets，especially packaged foods，are prepared in factories．Chemicals are added to the foods in these factories to make them look better，taste better and last longer on the shelf．The chemicals are supposed to be harmless and there are laws that regulate(控制) which chemicals can and cannot be used．Unfortunately，some producers do not obey the laws． A producer of steamed buns(馒头)in Zhejiang Province was recently discovered to be breaking the law．He was adding yellow dye and other banned chemicals to the buns．He was also taking old buns and using them to make new buns．Most of the buns were sold to schools and eaten by students…like you! Why did he do it? Why did he break the law and endanger people’s health? The answer is simple：he wanted to make more money．It was a moral failing，and this is at the heart of the food scandals in China．Too many people focus on making money and not on the effects their actions can have on others． 小题1:Chemicals are added to the foods in the factories because
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