问题
单项选择题 A1/A2型题
金葡菌对青霉素产生耐药性的主要机制是（）
A.产生β-内酰胺酶
B.产生蛋白水解酶
C.合成对氨苯甲酸
D.改变代谢途径
E.降低细胞膜对药物的通透性
答案
参考答案：A
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金葡菌对青霉素产生耐药性的主要机制是（）
A.产生β-内酰胺酶
B.产生蛋白水解酶
C.合成对氨苯甲酸
D.改变代谢途径
E.降低细胞膜对药物的通透性
参考答案：A
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| Jack Brown is very fat. His wife is worried about his health. "It's not good for your health. You should see the doctor and ask him how to lose weight (重量)," she tells him. "OK," answers Jack. He goes to see his doctor. The doctor weighs him. Then the doctor says, "You are 90 kilograms heavy. It's very bad. You must lose about 20 kilograms. " "Oh, what should I do, Doctor?" Mr Brown asks in surprise. "You should eat only fruit and vegetables. You must run 5 kilometers a day for the next 100 days. Then call and tell me how much you weigh," the doctor says. Jack goes home and does what the doctor has told him. One hundred days later, he calls the doctor. "Jack Brown here, Doctor," he says, "I'm calling to tell you about my weight. I have lost 20 kilograms. " " Great," says the doctor. "Yes, but there's a problem," Jack says. "I'm 500 kilometers away from home. I don't know how to get back ! " | |
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