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【判断题】
认证是指由国家认可的认证机构,证明一个组织的产品、服务、管理体系复合相关标准、技术规范或强制性要求的合格评价活动。A.
正确
B.
错误
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【单选题】听力原文：Of the students participating in our university's research project, 73% classified themselves as freshmen and sophomores. (23)
A.
Many university students prefer soft drinks to fresh fruits.
B.
Most of them are first-or-second year college students.
C.
A number of college students refuse to disclose their identities.
D.
Not many students are interested in our research projects.
【简答题】It seems like every day there's some new research about whether our favorite drinks are good for us. One day, science says a glass of red wine a day will help us live longer. The next day, maybe not...
【简答题】史铁生《我与地坛》是什么体裁的文章?本文中，作者通过哪些方法来表现母爱的?
【单选题】Since our research so far has not produced any answers to this problem, we need adopt a different ______ to it.
A.
approach
B.
way
C.
means
D.
method
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