阅读下面短文，掌握其大意，然后从1～20各题所给的四个选项（A、B、C和D）中选出最佳选项，并在答题卡上将该项涂黑。
The students at Sandy’s high school were badly shaken by the news that a classmate had          himself. The suicide note read: “It’s hard to         when nobody cares if you die.”
Glen, a teacher, realized this was a          moment about the importance of making people feel
        . He asked his class to imagine they were about to           and to write a note “telling someone how and why you          him or her.”
Sandy, who had a           relationship with her mother, decided to write her          . Her letter read: “We’ve had some           times and I haven’t always been a very good         ,but I know I’m lucky to have you in my life. You’re the          person I’ve ever known, And even when I disagree with you, I never           you love me and want what’s best for me. Thanks for not           up on me”.
When her mom read the note, she cried and hugged Sandy          but said little.
The next morning, Sandy found a        on her mirror: “Dearest Sandy, I want you to know being your mother is ,by far, the most important thing in my life.         I got your note, I thought I had lost your love and          . I felt like such a failure. I intended to        it all last night. Your note saved my          .”
Be careful not to underestimate the          of expressed appreciation. It won’t always save a life, but it will always make someone’s life better.

A．sacrificed B．defeated C．abandoned D．killed

A．live B．imagine C．struggle D．think

A．sad B．final C．teachable D．great

A．ashamed B．valued C．excited D．scared

A．die B．fail C．retire D．survive

A．miss B．hate C．admire D．appreciate

A．close B．casual C．bad D．personal

A．classmate B．mom C．father D．teacher

A．free B．delightful C．pleasant D．rough

A．daughter B．student C．friend D．trainer

A．best B．wisest C．luckiest D．gentlest

A．trust B．doubt C．consider D．predict

A．taking B．going C．giving D．looking

A．coldly B．hesitantly C．shyly D．tightly

A．note B．gift C．notice D．reminder

A．Since B．Until C．Though D．When

A．confidence B．courage C．respect D．heart

A．end B．make C．get D．fall

A．life B．time C．money D．honor

A．push B．price C．meaning D．power