题目

The whole morning we just checked our own things. We were looking for items to give away. We thought of blankets, food and clothing. Our aim was not to find things we no longer wanted, but things we use every day and would be useful to others. We made up boxes with the things and added some small toys. Inside the boxes a simple letter was placed, reading: “Please take these items and know that your life is important. Times are difficult but they will pass. We share what we have, believing it will matter. Use the blanket to stay warm. Be safe and know that the human spirit can overcome（战 据新闻30分报道，青岛海洋研究所已成功跟踪和模拟了“可燃冰”的燃烧，它将为我国研究和利用“可燃冰”提供可靠资料．“可燃冰”是水与天然气相互作用形成的晶体物质，主要存在于冻土层和海底大陆架中．据测定知每0.1 m3固体“可燃冰”要释放出20 m3的甲烷气体．下列说法中不正确的是 [　　] A． “可燃冰”将成为人类新的后续能量 B． “可燃冰”是水变油，属于化学反应 C． “可燃冰”具有使用方便，清洁卫生等特点 D． 我国青藏高原冻土层可能存在巨大体积的“可燃冰”