下列全是绿色开花植物生殖器官的一组是（　　）

从正有理数集合中去掉正分数集合，得到____ 集合．

语法填空。

    He is the man who for many people has been a role model. Now your biggest hero deserves a special day when you can express your thanks and let him know____ important he is to you. The third Sunday of June—which ____ (fall) on June 19 this year is Father's Day. The idea of Father's Day came from ____ American woman called Sonora Smart Dodd in 1909. Dodd wanted a special day ____ (honor) her father. He raised six children by ____ after his wife died. Dodd thought there needed to be a day to honor loving dads.

    The first Father's Day ____ (celebrate) on June 19, 1910. In 1924, US President Calvin Coolidge supported the idea of a  ____ (nation) Father's Day. Finally, in 1966, President Lyndon Johnson declared the third Sunday of June ____ Father's Day.

    Here are some ways to show your love and respect:

    Send him a greeting card. Fathers prefer cards ____ are not too emotional. So choose one that will make him laugh. If he has a computer, cover his desktop ____ words like “I love you Dad”. A small present, such as a framed photo of your family, can make him feel like a king.

阅读下列材料，回答问题。

材料一：他……30岁左右便收徒讲学，前后从事教育四十多年。相传他有弟子3000人，其中出名的有72人。他提倡“道之以德，齐之以礼”，主张“为政以德”。他有关教育思想和教育方法的许多言论，成为后世传颂的格言。

材料二：他生活在战国末期，是荀子的学生。他强调“法治”，并提出“事在四方，要在中央；圣人执要，四方来效”的理论。