ing to statistics, Chinese people between the ages of 18 and 70 read 6.7 books___ last year, including paper books and e-books.

下列各句中加点词语意义和用法相同的一项是

下列词语中没有错别字的一项是（）

mer camp isn’t goodfun, but it is real learningexperience for me

下列各组词语中字形全部正确的一项是（）(3分)