When I was about 12 years old， I really wanted a new bike！ I 1 my parents my birthday wish，but I knew there was little hope because my family could 2 have that money.
On my birthday my parents told me they had my 3 outside in the back yard. At once I 4 out to the yard. There was my bike， 5 it wasn’t the bike that I thought it would be. This one was pink， old and worn with age. It was so 6！ I thought I 7 my parents’ feelings because I could see the disappointment 8 their faces and I was sure they could see it on mine. I 9 the old bike and rode it， feeling 10 that I had made my parents feel this way. So I put on a smile， rode as fast as I could and didn’t 11.
As time went by， I began to understand my parents gave me 12 much more than just a rusty（生锈的）old bike. They gave me a life lesson about 13. When you give something out of love， it doesn’t matter what it is in fact. What matters is the love that is in it. I like to remember this 14 because giving a gift is not about money. It’s about how much love you can feel from it. Do remember， a gift that 15 two dollars isn’t any less valuable（有价值的）than one that costs one hundred dollars， or even more.

人体形成尿液的器官是（  ）

某复合材料是由碳纤维为增强体、金属钛为基体复合而成的。估计这种材料(  )

①耐高温 ②不耐热 ③导电、导热 ④不导电、不导热 ⑤可用于飞机机翼 ⑥可用于导弹的壳体