【单选题】采用电极法测定时,其测量的电位差与被测离子的活度呈
【单选题】听力原文:W: Why are you so happy today? M: I ran across the long-sought-after book on the subject in the public library. What did the man do today?
A.
lie went to the public library.
B.
He bought the book he had been looking for.
C.
He ran across the street to the library.
D.
He bought the book merely by chance.
【单选题】纽约外汇市场上,当汇率由1美元=108日元变为1美元=112日元时,说明( )升值,( )贬值。
【单选题】Why shouldn't you use clichés in your writing?
A.
They are considered boring and corny
B.
It's hard to figure out thier true meanings
C.
They are not used to oftern enough to be well-known
D.
They use complext, tricky words
【简答题】—Dear me! I've been in America for a month. —______you are settled, why don't you take up some serious study? [A] If [B] Now that [C] When [D] Even if
【单选题】Why are you still working on this project? It ’ s 4 o ’ clock in the afternoon and you are supposed _______it by noon.
D.
to have been finishing
【单选题】- Why are you in such a hurry? - I studied very hard for my math exam last night, so I slept late .
【单选题】— Why are you in such a hurry? — Don't you remember we ____ be home by 8 pm. to see our favorite TV show? [ ]
【判断题】苯丙酮酸在体内的堆积对中枢神经系统有毒害作用,会导致患病的儿童智力发育障碍。
【简答题】根据句意及首字母提示补全单词 。 1. —Why are you so happy? —Because I r a letter from my father yesterday. 2. Why not give Nick a photo a as a birthday gift? 3. I want to get my sister something special for her birth...