【单选题】Mary’s score on the test is the highest in her class; she ____ have studied very hard
【单选题】Mary’s score on the test is the highest in her class; she ______ have studied very hard.
【判断题】移动商务的价值链增值能力高于电子商务价值链。
【判断题】美国行为科学家埃德加•沙因在其1965年出版的《组织心理学》一书中把前人对人性假设的研究成果归纳为“经济人假设”、“社会人假设”和“自我实现人假设”。
【单选题】Mary’s score on the test is the highest in her class; She____have studied very hard.
【单选题】Mary’s score on the test is the highest in her class, and she ____ have studied very hard.