完形填空。
1! My name 2Alice. I'm fourteen 3 . I like playing Volleyball 4 going to the cinema. My favourite5 is Christmas.
This is my friend Joe. He's fifteen. He 6 like playing sport. He can7 English and he likes Maths. He wants8 everything about it.
This is my cousin. She is thirteen. 9 favourite sport is skating and she can skate very 10 . She likes music. She says it's exciting.
U (l) 。取等量的E，分别在20℃、50℃测得E的转化率随时间变化的关系曲线(Y-t)如右图所示。