---When did the film star arrive ________America, Jane?
--- Sorry, I don't know
A：at
B：in
C：on
D：of
甲数除以乙数的商是1.5，甲数与乙数的最简整数比是____。
— No, it's the 15th of June.
It's 8:00. It's time to read books.
____。
明朝开国皇帝朱元璋下诏：“宜令郡县皆立学，礼延师儒教授生徒，以讲论圣道，使人日渐月化，以复先王之旧，以革污染之习，此最急务，当速行之。”“复先王之旧”实质上是指（ ）
