解析：A、They are often handled improperl_考试试题_托福

【单选题】
A、They are often handled improperly by readers.
B．The paper is destroyed by chemicals.
C．The ink used in printing damages the paper.
D．The glue used in the binding loses its strength.

网考网参考答案：B
网考网解析：
According to the man, why do modern books decay document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>