旅游者张三走路不小心摔倒，并绊倒旅游者李四摔倒受伤，李四可以（）索赔。
A.向旅行社
B.向张三
C.导游和领队
D.向其他游客
参考答案：A
患者男，因十二指肠溃疡伴幽门梗阻2年，每晚呕吐出大量隔夜食物。查体：消瘦、皮肤松弛、干燥、血清钠128mmol/L，病人的表现应为（）
A.等渗性脱水
B.低渗性脱水
C.高渗性脱水
D.稀释性低血钠
E.混合性缺水
In this question, you will listen to a conversation. Then you will be asked to talk about the information in the conversation and to give your opinion about the ideas presented. After the question, you will have 20 seconds to prepare your response and 60 seconds to speak. Listen to two students discussing tuition fees.
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