According to the author, the incidents of e-book removal are rooted in______.
A. sellers" lack of professional ethics
B. buyers" abandonment of user right
C. buyers" conduction of improper practices
D. sellers" retaining of books" ownership
Young people raised in tough economic crisis______.
A. tend to hold a more pessimistic attitude toward life
B. are less likely to hop from job to job
C. tend to try their luck more frequently
D. are paid less than those living in booming period
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