Why do we find it difficult to remember all the details in books when we read them?（为什么我们在阅读时很难记住书中的所有细节？）
A: Because people don't do their best to remember.（因为人们没有尽力去记忆）
B: Because people do not have many cognitive resources when doing information processing.（因为人们在进行信息处理时没有很多认知资源）
C: Because the content of this book is too boring.（因为这本书的内容太无聊了）
D: Because people have a poor memory.（因为人们的记忆力不好）