答案：

　　【答案】46---50：D B D D B；

　　【解析】本文叙述的是一向不喜欢光临图书馆的David，因为要帮妹妹还书，而被迫进入图书馆，因疏忽，他被锁在了里面。这次偶然的事件使David觉得泡图书馆并不是想象中那样一件糟糕的事。

　　46. D，细节判断题。

　　问题：David的妈妈想让他做什么？根据提问句子的主谓语内容“his mother”“wanted him to do”可以定位，本题答案在第一段，根据文中“But his mother told him to return his sister’s books to the library on his way to Jim’s house.”可知，正确答案为D。

　　47. B，细节判断题。

　　问题：David认为_____期间他已经读了很多的书。根据提问句子主句内容“David thought he had read a lot”可以定位，本题答案在第二段第二句。根据“He thought he had read a lot during the school year.”可知，正确答案为B。

　　48. D，细节判断题。

　　问题：David走进图书馆是因为_____。根据问题上句“David went inside the building”可以定位，本题答案在第二段。根据文中叙述“Today he’d just drop the books off in the outside return box, but it was locked. He had to go inside to return them.”（他只想把书放在外面的还书箱，但已经被锁上了，他不得不走进图书馆）可知，正确答案为D。

　　49. D，综合判断题。

　　问题：哪一个句子可以填入表格中两个句子之间？试题分析：表格中上句“He wrote a note on a big piece of paper.”在第四段结尾，下句“He opened the book and began to read.”在第五段中间。而选项A. He searched for a light；B. He put the books into the return box.；C. He had a quick drink of water.；均发生在上句之前，只有D与文中“He then turned his attention to the library itself.”同义，因此，正确答案为D。

　　50. B，主旨理解题。

　　问题：在被锁在图书馆之后，David发现_____。被锁图书馆后，文中描述较多，故本题应从选项入手。A. he was very afraid of the dark.文中没有叙述；B. he became interested in this place.与文中“He was surprised to discover that this place was not so bad.”（他吃惊的发现这个地方并不坏）“He felt that being locked in the library didn’t seem to be such a terrible thing.”（他感觉被锁在图书馆并不像是一件糟糕的事）。结合两句所表明的意思及David的行动可知，选项B与文章叙述相一致；C. his mom was worried about him文中没有叙述；D. His friend became nervous about him文中没有涉及。分析选项可知，正确答案为B。

　　【考点】人物故事类阅读理解

　　【点拨】人物故事类阅读理解要求学生明白故事发生的时间、地点、原因、发展、经过、结果以及人物在故事中的思想认识及感情的发展变化。这可以作为阅读此类文章的思路。

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