C．hopeful D．careful

　　解析：选A　由"I'd changed his life"可知，作者改变了他的生活，所以他对作者非常感激。

　　15．A.agreeing B．trying

　　C．offering D．promising

　　解析：选D　由"We exchanged numbers"可推断，他走的时候许诺会与作者联系。

　　16．A.forget B．visit

　　C．call D．invite

　　解析：选C　由上文"We exchanged numbers"可推断，此处应指作者以后会打电话给他。

　　17．A.story B．thought

　　C．adventure D．event

　　解析：选A　此空应指上文讲述的故事。

　　18．A.colleagues B．friends

　　C．families D．strangers

　　解析：选D　由上文的例子可知，生活当中kindness通常来自我们不认识的人。

　　19．A.routine B．belief

　　C．theory D．rule

　　解析：选B　由"should help and encourage each other"可判断，此处应指作者的信念。

　　20．A.saying B．getting

　　C．doing D．creating

　　解析：选C　本空后的it应指"help and encourage each other"，故此处应为实践这种做法。

　　Ⅱ.阅读理解

　　Whenever I was cautious about trying something new, my mom would always tell me one thing: you don't know unless you try.I've been holding this belief in my entire life.It lets me explore various opportunities that I would have missed.

　　Over the summer, I helped out at a preschool with the kids who needed some extra learning.At first I thought it would be super crazy with kids running around all over the place.I thought it would be a month of pure annoyance, but it ended up being pretty cool.They actually opened up to us, talked to us, and told us things they needed to get off their mind.They were so joyful to be around.I found myself happy that I was helping these kids, no longer afraid of the experience.

Again in middle school, I experienced this same belief.There were various school dances and school holiday events.I was not very fond of going to these events, thinking that I would either be