父母、老师和孩子一起读书，享受读书的乐趣。

　　21．According to the text，the event on March 2 is held in________.

　　A．Barnes & Noble　　　　 B．The Magic House

　　C．Baylor Bookstore D．Avid Bookshop

　　解析：选D　细节理解题。根据文章前面表格中内容可知，3月2日这天读书活动在Avid Bookshop举行，故选D。

　　22．What's the original purpose of Read Across America?

　　A．To promote American culture.

　　B．To get children to study hard.

　　C．To make children interested in books.

　　D．To introduce famous writers to the public.

　　解析：选C　细节理解题。根据文章正文第一段第一句"You're never too old to pick up a book and read with a child"和第二段最后"The key point is making it fun，not for the next test，not because it's something they have to memorize or something they have to do"可知，这个活动的目的是使得孩子们对读书感兴趣。

　　23．The book What Pet Should I Get? is mainly written for________.

　　A．teachers B．parents

　　C．children D．pet shop owners

　　解析：选C　推理判断题。根据文章第三段"includes rhymes, humor and familiar Seussian illustrations.In it, a brother and a sister visit a pet shop and have trouble choosing just one animal to bring home"可推测，该书主要是写给孩子看的。

　　B

　　(2018·北京西城模拟)Turning the lights out or wearing a blindfold while eating could be a quick way to lose weight, according to scientists. The simple trick works because it stops diners eating for pleasure rather than for calories. It also triggers (引发) a part of the brain that is worried that unseen food may go bad.

An experiment by the University of Konstanz, in Germany, found that people who were blindfolded consumed nine percent fewer calories before they felt full, compared to those who could see.They also vastly overestimated how much they had eaten