下列关于金刚石、石墨、C60、CO2的说法不正确的是( ) A.大气层中CO2过 发布时间:2017-05-03 06:36 │ 来源:www.tikuol.com 题型:选择题 问题: 下列关于金刚石、石墨、C60、CO2的说法不正确的是( )A.大气层中CO2过多会造成“温室效应”B.石墨质软,可作铅笔芯C.C60是一种新型的化合物D.金刚石硬度大,可切割大理石
题型:选择题 完形填空。 Someone says, "Time is money." But I think time is 1 important than money. Why? 2 when moneyis spent, we can get 3 back. However, when time is 4 , it will never return. That is why we mustn't waste time. It goes without saying that the 5 is usually limited (有限的). Even a second is very important. We should make full use 6 our time to do 7 useful. But it is a pity that there are a lot of people who don't know the importance of time. They spent their limited time smoking, drinking and playing. They don't know that wasting time means wasting parts of their 8 . In a word we should save time. We shouldn't leavetoday's 9 for tomorrow. Remember we have no time to 10 . ( )1. A. much ( )2. A. Because ( )3. A. their ( )4. A. cost ( )5. A. money ( )6. A. for ( )7. A. nothing ( )8. A. time ( )9. A. newspaper ( )10. A. lose B. less B. For B. them B. bought B. time B. of B. something B. food B. dinner B. save C. much less C. As C. it C. gone C. day C. to C. anything C. money C. work C. spend D. much more D. And D. its D. finished D. food D. into D. everything D. life D. TV D. able 查看答案
题型:选择题 病历摘要:熟悉药品管理法的内容及有关规定,掌握医疗机构药事管理概念及其处方、制剂、药物临床应用的主要规范性内容。药物的临床试验机构必须执行()A.GAPB.GLPC.GCPD.GMPE.GSP 查看答案