19．A.reach for B．dream of

　　C．refer to D．meet with

　　解析：选A　根据该句中的"several times a week"可知，即使是现在，"我"每周还会拿起《善良》这首诗来读上几次。reach for意为"拿起，触碰，提起"，符合语境。故选A。

　　20．A.for B．with

　　C．off D．into

　　解析：选D　carry sb./sth. into意为"将某人/某物带至"。此处指这首诗歌带"我"走进对"我"来说什么才是真正重要的东西的核心。故选D。

　　Ⅱ.语法填空

　　Nowadays many universities encourage and organize students to take part in social practice activities. It's obvious __1__ social practice is playing a more and more important role in China's college education.__2__ (undoubted), college students have benefited a lot __3__ social practice. Above all, they __4__ (provide) with more opportunities to contact the real world outside the campus. Moreover, in social practice activities, students can apply their __5__ (know) to settle the practical problems. So their practical skills are improved greatly. Besides, social practice helps __6__ (strength) students' sense of social responsibility.

　　__7__ (consider) the above­mentioned, I think, it is necessary for college students to participate in social practice. __8__， social practice may bring some problems. For example, some students spend too much time in doing part­time jobs, __9__ leads to the fact that the students ignore their study. Therefore, we should try __10__ (balance) the relationship between social practice and study.

　　语篇解读：本文是一篇议论文，主要讨论了大学生应当平衡社会实践和学习的问题。

　　1．that　分析句子结构可知，该句使用了主语从句，It为形式主语，真正的主语为that引导的主语从句。

　　2．Undoubtedly　句意：毫无疑问的是，大学生已经从社会实践中受益很多。空格处修饰整个句子，故用副词形式。

　　3．from　benefit from为固定搭配，意为"从......中受益"。

　　4．are provided　句意：总之，他们被提供了更多接触校园外真实世界的机会。根据句意可知，该处陈述的是一般现象，故用一般现在时；该句主语they和动词provide之间是被动关系，故用被动语态。

　　5．knowledge　根据空格处前的物主代词their可知，空格处应用名词形式。

6．(to) strengthen　句意：此外，社会实践帮助学生增强社会责任感。help (to) do sth.为固定搭配，故用动词原形或不定式。