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下列关于酮体的描述错误的是（ ）。
Passage 2 What is paper made (Example: 0 )? When we 1 books or newspapers, we seldom stop and think about the things 2 to make them. 3 paper our lives would be very different. Paper is one of 4 important inventions（发明） of all time. The people in Egypt（埃及） first used a kind of grass-like plant to 5 paper around five 6 years ago. 3000 years later, a Chinese man created a new 7 of paper using pieces of old cloth. Then for several hundred years, people 8 the world had been using this Chinese method to make paper. In 1838, a Canadian man invented a 9 method of paper-making using wood. Today, most of the paper we use is made from 10 .例：0. A. from B. in C. of【答案】A1. A. look at B. read C. watch2. A. be used B. used C. using3. A. For B. With C. Without4. A. the most B. the better C. the worst5. A. write B. do C. make6. A. thousands of B. thousand C. thousands7. A. type B. thing C. one8. A. all over B. over C. from9. A. new B. old C. bad10. A. cloth B. grass C. wood
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某公司生产和销售A、B两种产品，A产品的单价为5元，B产品的单价为2.50元；A产品的贡献边际率为40%，B产品的贡献边际率为30%，全月固定成本72000元。假定本月份A产品的预计销售量为30000件，B产品为40000件。如果本月增加广告费9700元，可使A的销售量增加到40000件，而B的销售量下降到32000件，请具体分析采取这一措施是否合算。
最早用于治疗NS的药物为（）
健康的生活方式提倡每天保持多少小时睡眠（）。
运动是骨关节和肌肉的“营养素”，是因为运动锻炼（）
在国内综合管廊已建成的城市有（）。
“易燃液体”和“氧化剂”分别属于（）类危险化学品。
下述哪种细胞不属于吞噬细胞（）