题干

半径为1的圆中最长的弦长等于​ ____

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同类题1

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    It began years ago, after Mom had been diagnosed with Alzheimer's. As her symptom 1, I often had a hard time figuring out what was real and what wasn't in her2. One day I was helping her find some pants that fitted, and she was 3 them on and looking in the mirror. Suddenly she turned and said,4 to her reflection in the mirror, “Well, I like her. She is always really nice to me.”

    It caught me so off guard. There we were doing 5 things, and suddenly she was talking about her reflection as if it were another person. How should I 6? I looked closely, as if there was going to be someone else in that mirror, saying, “Great. I am so glad she's 7to you.”

    Though still in 8 I knew there was no point bringing someone with Alzheimer's back to 9It wasn't, until later that I could 10 that the lady in the mirror was real to Mom.

    Another time I walked in, finding Mom 11 I was going to leave when Mom woke up. “Hi Mom, it's me, Molly, your daughter.” Since Mom may or may not 12 me when we meet, I always identify myself to her.

    That day she remembered me. She 13 my arm slightly and said, “Hi, honey. Come here, I want you to meet someone 14 she leaves.” And so I was reintroduced to the lady in the mirror. I 15 her as if someone were really there, and that was 16for Mom.

    I am glad she loves her17 because she sees herself as a kind being. This is yet another18 my mother has taught me: We should love ourselves and others with the kind of 19 my mom has for her lady in the mirror, even though she doesn't know she is seeing herself, my beautiful, loving, and 20 Mom.

同类题3

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    A culture's values can be mirrored by its humor. Humor has been evaluated by many great minds such as Thomas Hobbes, who, In"On Nature", disliked humor," Laughter is nothing else but sudden glory arising from sudden thought of feeling far better than others." He thought humor to be a negative quality of human narrow-mindedness.

    However, Mordechai Gordon, PhD of Education, insists," Humor allows us to view the world from an angle that is amusing rather than serious." I agree with Gordon. Learning to look at the world through humor is important.

    In the United States, every four years an election occurs. Without humor as a way to express their feelings, how would Americans be willing to support the election? Television shows like "The Daily Show" have become important parts of American culture. They are mothering the masses by unconsciously inputting politics into our mouths. They make politics fun.

    Of course, politics is only one type of humor. Social humor helps people through the twists and turns of the human condition. American pop culture promotes an unhealthy self image. On the topic of self-image, Hari Kondabolu stands out. He has a joke about the popular musical group "The Pussycat Dolls", describing their hit song "Don't Cha" as a negative representation of women. He points out an obvious offence in American culture.

    A study from Loyola University of Maryland has shown that humor is one determining factor for selecting a mating partner. Amongst other things, mates look for an outstanding funny bone in a potential partner.

    Of course, humor is not always used for good purposes. Humor can be linked to vulgarity(粗俗)and racism, but, like everything else, it has potential to unite human beings by allowing us to laugh at ourselves, our failures and our connection with one another.

    Though life may seem tough and depressing at times, all I have to do is look in the mirror at my increased wrinkles(皱纹)to know that there is a comedy out there that even Chaplin wasn't aware of.

    With that in mind, remember to laugh with humanity and sometimes at humanity.

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