55. What did the joint study find about the MOOCs several years ago?
A) They helped solve learners' financial problems.
B) They benefited most of the learners.
C) They changed some learners' career path.
D) They provided the most needed vocational skills.
（本题出自2023年3月四级真题卷一）
答案&解析：
55.B)
【精析】推理判断题。定位句指出，2015年，一项联合研究发现，72%的参加大型开放式网络课程的人在之后看到了职业发展的好处。由"72%"可推知，大型开放式网络课程使大多数学习者受益，故答案为B)。
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