如图，是用七巧板拼成一个图形，其中③、⑥、①板的面积分别为S_③，S_⑥，S_①，则 S_③：S_⑥：S_①=____ ．

某口袋里现有8个红球和若干个绿球（两种球除颜色外，其余完全相同），某同学随机的从该口袋里摸出一球，记下颜色后放回，共试验50次，其中有20个红球，估计绿球个数为（　　）

    Hello! My name is Jack. I'm 1Changsha. I'm in No.1 Middle School. It's 2good school. My school ID card 3 is 2016701. John is 4English friend. His 5name is Brown. John is in Changsha No.5 Middle School. We(我们) can 6in the evening. Sally and Jane are John's 7sisters(妹). Sally is 10. Her favorite (最喜欢的) 8is blue. Her cup and jacket are 9. Jane is 2. She can say "10are you?" to me now.