Happy as I am, there are various advantages inside the books. In terms of the topics, the texts cover different fields, which is rather helpful to open up our eyes to the outside world. Furthermore, the textbooks provide a vast ocean of pictures. All those advantages really help us promote our interest in study.
Nevertheless, I am just wondering if you could take my advice. Would you turn down the difficulty of the vocabularies? If so, sure will there be less problems for us to understand the articles.
Generally speaking, your textbooks are successes not only for the knowledge, but also for the forms. Thank you all the editors for bringing us happy in English classes.