问题
判断题
燃烧必须具备二个条件，即可燃物质、点火能量，这二个因素必须同时存在，缺少一个就不能发生燃烧。
答案
参考答案：错
解析：燃烧必须具备三个条件，即可燃物质、助燃物、点火能量，这三个因素必须同时存在，缺少一个就不能发生燃烧。
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燃烧必须具备二个条件，即可燃物质、点火能量，这二个因素必须同时存在，缺少一个就不能发生燃烧。
参考答案：错
解析：燃烧必须具备三个条件，即可燃物质、助燃物、点火能量，这三个因素必须同时存在，缺少一个就不能发生燃烧。
age. At the age of eight, Bethany took part in her first surf competition and 2. . This started a love for surf competition in her. On October 31, 2003, while she 3. surfing, a big shark(鲨鱼) came over to Bethany suddenly. The shark got her left arm, and hurt her 4. . Luckily, she tried her best and swam back to the land. Bethany lost over 0% of her blood and was 5. to hospital. The doctors saved her life. The girl was brave and strong-minded. Though she lost her arm, she . 6 still surf. Later, Bethany returned to the water. She didn’t give up 7. dream of becoming a surfer, but she had to practice 8. than before. The next year, Bethany got the first place in an important surf competition. As time went by, people all over the world began to 9. about Bethany and her story. In 2011, a movie about her was made. She is one many good 10. to teenagers through the story of a brave girl with strong mind and hope. |