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【简答题】
贪心算法总是做出在当前看来（ ）的选择。也就是说贪心算法并不从整体最优考虑，它所做出的选择只是在某种意义上的(局部最优选择)。
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举一反三
【简答题】听力原文：What differences are there between British English and American English? What differences are there between British English and American English? The differences involve grammar, ______, etc.
【简答题】It is the first time that I _____ in public. A. have spoken B will speak C. had spoken D. will be speaking
【单选题】The sum of the real numbers xand yis 11. Their dif-ference is 5. What is the value of xy?
A.
3
B.
5
C.
8
D.
24
E.
55
【多选题】在MACD应用法则中，当( )时为空头市场。
A.
DIF和DEA为正值，DIF向上突破DEA
B.
DIF和DEA为正值，DIF向下跌破DEA
C.
DIF和DEA为负值，DIF向上突破DEA
D.
DIF和DEA为负值，DIF向下跌破DEA
【单选题】-π，-少， 少 少 ， 少 的大小顺序是（ ）
A.
-π＜-3＜ 3 ＜ 3 3
B.
-π＜-3＜ 3 3 ＜ 3
C.
-3＜-π＜ 3 3 ＜ 3
D.
-3＜-π＜ 3 ＜ 3 3
【单选题】—I haven’t worked the problem out yet. What am I supposed to do? —Try again! It’s only _________ difficult. [ ]
A.
a lot
B.
a bit
C.
too much
D.
too many
【简答题】What does the PAR mean ?What does "the DIF method "mean?
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