Dear Grandma and Grandpa,

    I miss you so much. Thank you for the new bike! I'm so excited! How did you know 1 is my favorite color?

    When I first 2 the box under the Christmas tree, I didn't know what it was. I thought it was 3 small to hold a bike. Then when I opened it, I saw that the bike was in small pieces. That's 4 the box was small!

    Dad and I put them 5 the next day. It was a lot of fun. 6 we finished, I got on the blue bike and 7 around the town. My old bike was too small for me. This one is just 8. It looks great, too! All 9 friends want one like this now. Dad said that I could take my 10 when we go to visit you in the spring. I can't wait.

Yours,

David

世界大多数动植物都能在我国找到适合生长的地区，是因为我国（    ）

下列关于乌里雅苏台的叙述正确的是（ ）
①明朝省级行政区②清朝五个将军辖区之一③管辖范围包括河套地区④当地居民以蒙古族为主

下列说法正确的是（  ）