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69. It can be inferred from the passage that major universities are trying to tighten their grading standards because they believe _________. A) rewarding poor performance may kill the creativity of students B) punishment is more effective than rewarding C) failing uninspired students helps improve their overall academic standards D) discouraging the students anticipation for easy rewards is a matter of urgency Questions 61 to 65 are based on the following passage: 61. By ... challenges explanation the author means that _________ A) no explanation is necessary for such an obvious phenomenon B) no explanation has been made up to now C) it s no easy job to provide an adequate explanation D) it s high time that an explanation was provided 注：词汇题 62. The third paragraph is mainly about ________ A) the development of babies early forms of language B) the difficulties of babies in learning to speak C) babies strong desire to communicate D) babies intention to communicate 注：段落主题题 63. The author s purpose in writing the second paragraph is to show that children _________. | 
