根据短文内容，从短文后的选项中，选出能填入空白处的最佳选项。选项中有两项为多余选项。
Last month, students from one hundred and three universities in eighty-eight countries took part in an international computer programming contest. The Battle of the Brains took place in Harbin, China.    71    
Jerry Cain, coach of Stanford University Team, California, says “One of the programming problems was trying to figure out how to break an arbitrary chocolate bar into a certain number of pieces of a certain number of sizes and to do it as quickly as possible.    72    ”
The students first listed the problems in order of difficulty.  73  They designed ways to test their solutions. And they wrote needed software systems. Even the winning team form Shanhai Jiaotong University in China was not able to solve all the problems within the given time limit. Stanford’s team solved five problems and finished in 14th place. Stanford was one of twenty-one American universities that took part in the contest this year.
74    It began in 1970 at Texas A and M University. The contest quickly became popular in the United States and Canada. It developed and grew as more and more schools took part in local and area contests.
The first final competition was held in 1977 at the Association for Computer Machinery Computer Science Conference. Today, a network of universities holds area competitions that send the winners to the world finals, now organized by IBM. Contest spokesman Doug Heintzman says the world champions receive prizes and scholarships.    75   

A．The competitors show great interest in IBM.

B．Then they figured out the requirements of each.

C．And that’s probably the simplest of all of them.

D．This competition is an opportunity to be recognized by famous universities from the world.

E．Three-person teams from each school had five hours to solve eleven real world problems.
F．The official name of the Battle of the Brains is the ACM International Collegiate Programming Contest.
G．They are also guaranteed and offer of employment with IBM.