【单选题】用于标定Na2S2O3 溶液的基准物质是( )
【简答题】Short conversations What can we learn from the conversation? Why does the woman choose to learn French? What did the man do last night? What made Melissa unhappy? What does the man think of the woman'...
【单选题】用于标定Na2S2O3溶液的基准物质是()
【简答题】听下面一段对话,回答第1-3题。 1. Why does the man want to borrow the woman's notes? A. He raised the classes. B. He is not satisfied with his notes. C. He has not taken any notes in class. 2. When does the man fee...
【单选题】水煤气发生炉中能发生的反应有:(1)CO2(g)+C(s)→2CO(g),(2)H2O(g)+C(s)→H2(g)+CO(g),(3)CO2(g)+H2(g)→H2O(g)+CO(g) 。当体系达到平衡后,有
【简答题】Why does the man offer a lift? [A] Because the woman's home is on his way home. [B] Because the driver is always willing to help others. [C] Because the driver is going home right now. [D] Because the...
【单选题】用于标定 Na 2 S 2 O 3 溶液的基准物质是( )。
【单选题】Why does the man say this:
A.
To suggest a course of action for solving the woman's problem.
B.
To express frustration that the woman is unfamiliar with the library.
C.
To let the woman know who will be available to help her in the library.
D.
To indicate that he does not have time to assist the woman now.