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【单选题】
听力原文：M: I feel very ill, Doctor. W: What is the matter with you? M: I have a terrible sore throat. I have a headache, too. W: Have you been coughing and sneezing? M: I cough a lot, but I don't sneeze. W: Put this thermometer under your tongue. I want to see if you have a fever. Let me see. Yes. You have a fever. M: Is my temperature very high? W: No, not very. Here is a prescription. Stay in bed and rest. Drink hot tea. Come in and see me in my office on Monday. What should the man drink a lot?A.
Coffee.
B.
Hot tea.
C.
Pure water.
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皮皮学刷刷变学霸
举一反三
【简答题】设函数 f(x)= 2 x ，x≥0 f(x+1)，x＜0 ，则 f(- 1 2 ) =______．
【单选题】已知反应CO(g)= C(s)+O2(g)的ΔrHmΘ>0、ΔrSmΘ<0则此反应( )。
A.
低温下是自发变化
B.
高温下是自发变化
C.
低温下是非自发变化，高温下是自发变化
D.
任何温度下都是非自发的
【单选题】已知反应2CO（g）=2C（s）+O 2 （g）的△H为正值，△S为负值。设△H和△S不随温度而变，下列说法正确的是
A.
低温下能自发进行
B.
高温下能自发进行
C.
低温下不能自发进行，高温下能自发进行
D.
任何温度下都不能自发进行