阅读短文，判断正误。
Dear Joe,
    How are you? My sister and I are having our holiday. Yesterday we went to the library. We got there by bus. We read storybooks and had lunch there. The food was delicious. It was cheap, too. We went shopping in the afternoon. I bought a pair of shoes. I was very tired. We are planning to learn skating and do many other things during the holiday. We are sure we'll have a good time.
    How about your holiday? Please write to me soon.
Miss you.
Alice

根据音节，写同音字组词。

①fù ②jī

____亲 ____地

____裕 ____会

胜____ 公____

____钱 ____打

经检测，鲜牛奶中有两种分子式分别为C₁₂H₂₂O₁₁和C₁₈₆₄H₃₀₁₂O₅₇₆N₄₆₈S₂₁的化学物质，这两种物质最可能是

如图，在△ABC中，∠C=∠ABC=2∠A，BD是AC边上的高，求∠DBC的度数．

听第二段对话，回答小题。