题目内容:
Inwhatsensedoe-booksexertanegativeimpactontheenvironment?
A.Theyareunabletobebrokendownintoharmlessproducts B.Theyconsumealotofnaturalresources
C.Theyproduceharmfulgases
D.Theyarecapableofbeingreused
参考答案:
答案解析: