第30题: [单项选择]Most lecturers find it expedient to use notes when addressing to graduate students. A. troublesome B. expensive C. useful D. improper 参考答案:C 答案解析:troublesome麻烦的:expensive昂贵的:useful有用的;improper不合适的。 因为 expedient意为“有利的,权宜的”,故选C项。
第31题: [单项选择]符合铁代谢特征的是() A. 缺铁时正常肠黏膜对铁吸收减少 B. 铁主要在回肠吸收 C. 在肠黏膜内能合成铁蛋白 D. 人体所需铁完全依靠从食物中摄取 E. 血清铁一般是亚铁离子 参考答案:E
第36题: [简答题]People are never satisfied with what they have. They always want something more or something different. Do you agree or disagree Use reasons to support your opinion. 参考答案: 答案解析:In my opinion, that people are never satisfied with what they have and always strive for something n