①画出确定C地位置的图是方法，保留痕迹．②画出C点到直线AB的最短距离路线图，保留痕迹．

    There are about 100 million middle-aged women dancing in parks and on squares in China, and Deborah Roundy,____ U.S retired school teacher, is one of them.

    Mrs. Roundy is the only foreigner on the Shanghai dance team at Tongji University, where she is ____ (current) teaching English.

    Mrs. Roundy ran upon a dozen or so middle-aged women dancing ____ the tunes of Chinese songs in 2012. At the time, she didn't feel used to the new environment and wanted to have some fun in her life. She ____ (invite) to join the dancing team.

    At first, Mrs. Roundy communicated with her teammates by____(exchange) notes to help translate for her. Now she uses a translation app on her iPad.

    ____the Chinese language is not the most difficult thing for her, mastering Chinese dance is. Mrs. Roundy used to do ballet. She said ____(dance) in the U.S. always dance facing the audience. But in China, they change directions all the time, and ____ was very confusing for her at first.

    They have developed good personal relations. Mrs. Roundy says they also go out to eat and on field trips together, which are____(forget ) experiences for her.

    Square dancing opens a window for her ____（understand） China, Mrs. Roundy said: Besides dancing, she and her husband have been active in community life, teaching English, and helping elderly neighbors.

诗歌品读。
                                                       早   发
                                                  宋  宗泽（①）
                 伞幄（②）垂垂（③）马踏沙，水长山远路多花。
                 眼中形势胸中策（④），缓步徐行静不哗。
        【注】①宗译：义乌人，曾任东京留守，屡败金兵，民间称之为“宗爷爷” 。②伞幄（wò）：伞形帐幕。③垂垂：轻轻飘动的样子。④胸中策：胸怀良策。