2019年12月英語四級真題及答案（卷一）：仔細(xì)閱讀

卷一46-50:AI助手

46: B It is a course designed for students to learn online.

47: CStudents'questions were unsatisfied weith the assistants48: A She turned out to be a great success

49: D They could not tell her from a real person

50: C Assign her to answer more of students'questions

51-55:科學(xué)籌款

51: C Not all of them achieved their anticipated goals

52: B To identify reasons for their different outcomes

53: B Its interaction with prospective donors

54: A They should be small to be successful

55: D Thcir fccling of conncction to the scientists themsclves