One day, in an English class, the students are having their lessons. Their teacher, a young woman is very happy. She sings some nice songs with them and then she goes to the blackboard and writes “SMILES” on it. “This is the longest（最长）word in English,” she says to the class.
   A girl stands up and says, “It has only six letters. How can it be the longest word in English?”The teacher smiles and says, “Oh, look! There is a mile（英里）between the first letter and the last one.”

我们应怎样积极行使生命健康权？

郁郁葱葱（AABB）：____、____、____

翩翩起舞（AABC）：____、____、____

各式各样（ABAC）：____、____、____

小心翼翼（ABCC）：____、____、____

大惊小怪（含反义词）：____、____、____

四面八方（含数字）：____、____、____

清真寺是哪个宗教的景观   （   ）

在△ABC中，角A、B、C对应的边分别是a、b、c，已知3cosBcosC+2=3sinBsinC+2cos²A．

（I）求角A的大小；

（Ⅱ）若△ABC的面积S=5$\sqrt{3}$，b=5，求sinBsinC的值．