实验探究
某同学在“探究花生果实大小的变异”实验中，选取两个不同品种的花生种子（粒数相同，大小不同），种在同一块地中，且采用同样的管理措施，收获后观察、比较果实的大小．
Hello! My name is Peter. I am a student. I often have busy days. I ____ at 6:30 in the morning. I ____ at home. Then I ____ at 7:10. I____ at 7:30. I ____ at 11:45. In the afternoon, we ____ class. After school, I ____ with my friends. In the evening, I ____ or ____ . I____ at 9:00. This is my day.
如图,PT是外切两圆的公切线,T为切点,PAB,PCD分别为这两圆的割线,若PA=3,PB=6,PC=2,则PD等于( )
at 6:30 in the morning. I 
at home. Then I 
at 7:10. I
at 7:30. I 
at 11:45. In the afternoon, we 
class. After school, I 
with my friends. In the evening, I 
or 
. I
at 9:00. This is my day.