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【单选题】
若运输问题的单位运价表的某一行元素分别加上一个常数k，最优调运方案将（）。A.
发生变化
B.
不发生变化
C.
不确定
D.
在某些情况下不发生变化，某些情况下发生变化
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【简答题】补全对话 Larry: What beautiful pictures! Tom: No, they’re not pictures. 小题1:_________________. Larry: Stamps ? 小题2:________________________. Tom: They are used for posting letters. Larry: 小题3:____________...
【单选题】Why was the film director interested in Larry?
A.
He was amused by Larry’s unusual way of recommending himself.
B.
He thought Larry would make a good actor.
C.
He was sorry for Larry.
D.
He didn’t want Larry to be employed by other companies.
【单选题】Which of the following statements about Larry can be inferred?
A.
Larry was an idealistic dreamer.
B.
. Larry had a fine sense of humor.
C.
Larry was going to be a great movie star.
D.
Larry was broke when he met the film director.
【单选题】What is probably true about Larry?
A.
Larry usually helps others to prepare for the test.
B.
Larry surprised us with his grade.
C.
Larry knew how to solve the mystery.
【简答题】. Larry Walters’boyhood dream was to fly. After finishing school, Larry joined the U.S. Air Force, but was refused from pilot-training school because of poor eyesight. However, his dream remained. Lar...
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