题干

下列说法不正确的是

A:液化石油气和天然气的主要成分都是甲烷

B:使用溴水或酸性KMnO4溶液都可鉴别乙烯和甲烷

C:在加热或加入重金属盐的情况下,蛋白质都可发生变性

D:淀粉水解的最终产物是葡萄糖

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A

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    From the first week of high school,my best friend,Trisha,was always going out with the popular girls.1I thought,“It's okay;she's just making new friends.”But soon I realized that Trisha wasn't interested in me anymore.I'd 2my best friend.It really hurt.

    One day,I told Trisha that we should3pretending(假装)to be friends when we really weren't anymore.I wasn't trying to make her mad,4she was.After that,Trisha started talking about me behind my back,telling people that I was5.Some of our friends6with her.I felt like she was taking them away from me.

    The more I thought about it,the7I got.Finally,I8a picture of Trisha and drew lines on her face.I wrote,“I 9this person”across the bottom.And then I did something I'll always10: I put it on a website I thought was11. I thought people would see it,and it felt good to vent(发泄).

    A week later,Trisha's mom saw the12.She called my mom,who made me take it off the website right away. However,it was already too13.Lots of people had seen it,and I was in a lot of14.

    That whole day,I felt15.I had to say sorry to Trisha face to face.She said she accepted my apology(道歉),but I felt she was16angry with me.

    Posting that picture was one of the worst17I've ever made.I realize now I could have found a much better way to deal with my18.If I'd just told Trisha how much I19her,maybe things would have turned out20.It's too late for me to change things,but I hope you'll learn from my mistake.