阅读下面短文，在空白处填入一个适当的词，或填入括号中所给单词的正确形式。

    Did you watch that popular TV show A Smile Is Beautiful this summer vacation? Yang Yang, 25, plays ____ important role in it. He acts a good-looking and smart college student who is ____ (talent) in playing games. Many people think Yang is the right person for the role not only because____ his good look. He also has a nice smile, and likes to play games.

    Now, Yang is becoming ____ (popular) than before. People like to call him "Little Fresh Meat". At the end of the year 2015, Yang ____ (win) the Most Influential (影响力的)TV Actor.

    Yang always says, "I hope ____ will be different kinds of acting roles for me in the future. I expect ____ (make) my dream come true." 

    "He is always trying to improve ____ (him). If he ____ (feel) his acting is not good, he will ask to try it again. He takes his work ____ (serious)." Su Youpeng, director of movie The Left Ear, said in a talk show.

有的微生物能够分解枯枝落叶、动物的遗体和粪便中的有机物，从而获得生活必需的物质和能量，这样的营养方式称为____。这类微生物是生态系统成分中的____者。

1000的立方根是（  ）

设x，y∈R，a＞1，b＞1，若$a^x=b^y=3$,a+b=2$\sqrt{3}$，$\frac{1}{x}+\frac{1}{y}$的最大值为____