问题
单项选择题
下列关于肾小管功能的叙述，哪一项正确
A．近端肾小管重吸收90%碳酸氢盐，70%水和氯化钠
B．髓袢主要重吸收葡萄糖和氨基酸
C．肾小管只具有重吸收功能，未发现具有分泌功能
D．远曲小管通过逆流交换机制浓缩稀释尿液
答案
参考答案：A
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下列关于肾小管功能的叙述，哪一项正确
A．近端肾小管重吸收90%碳酸氢盐，70%水和氯化钠
B．髓袢主要重吸收葡萄糖和氨基酸
C．肾小管只具有重吸收功能，未发现具有分泌功能
D．远曲小管通过逆流交换机制浓缩稀释尿液
参考答案：A
| 从方框中选出适当的句子补全对话。 | |
| A: Hi, Sally. I’m going to the USA as an exchange student. B: Great. A: But I don't know much of the customs and manners there. ___1___? B: Sure. A: ___2___? B: Well, they think it's important to be on time when you're invited to lunch, dinner or supper. ___3___. As it is usually planned to have the meal at the exact hour given in the invitation. A: Then how long may I stay there? B: ___4___, lest(以免)you seem to have come only for the meal. An evening dinner invitation usually implies(暗示)that___5___.The hostess often plans some after dinner entertainment. | |
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