2018英语四级长对话听力练习题（45）
时间：2018-01-25 来源：文都网校 浏览：听力是不少英语四级考生的软肋，很多考生在平常练习的时候往往是三分钟热度，这样练习肯定是不行的，大家一定要持之以恒。下面是小编为大家准备的英语四级长对话听力练习题，希望对各位考生有帮助!
19.
[A] The early history of bookbinding.
[B] How old books become valuable.
[C] Economical ways to protect old books.
[D] Why some books decay.
20.
[A] They are often handled improperly byreaders.
[B] The paper is destroyed by chemicals.
[C] The ink used in printing damages thepaper.
[D] The glue used in the binding loses itsstrength.
21.
[A] They are difficult to read.
[B] They are slowly falling apart
[C] They were not made from wood pulp.
[D] They should be stored in a cold place.
22.
[A] Get some books for the man to look at.
[B] Ask the man to look over her notes.
[C] Continue her research in the library.
[D] Find more information on how books arepreserved.
听力答案：
19.D综合推断题。结合听力材料，特别是对话开头提到的old book...a lot of pages are turning brown and becoming brittle可以推断，对话谈论的是书的腐烂问题，所以D正确。
20.B综合推断题。女士认为用木材制纸时要往里面加一些化学制品和酸性物质以让纸变白，而男士说最终腐蚀纸张的就是这些酸性物质，由常识可推断出这类酸性物质也应是化学制品，即男士认为书籍的腐烂是由化学制品造成的，故选B。
21. C信息明示题。男士说books havebeen made from wood pulp only since the 1850s，即19世纪50年代以前的书不是由木浆做成的，所以C正确。
22.C同义替换题。女士最后说的getback to my project与选项中continue her research同义，所以C正确。
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