答案:B 8.毒品预防教育的重点对象是( )。 A.青少年 B.老人 C.幼儿 D.妇女 答案:A 9.我国禁毒工作的治本之策是( )。 A.预防教育 B.依法严厉打击 C.切断毒品来源 D.戒断治疗 答案:A 10.下面表述正确的是( )。 A.禁毒主要是人民...
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进入答题系统后,点击“开始答题”按钮,系统将自动抽取2024年全国青少年禁毒知识竞赛题库题目生成10道题,每题10分、满分100分,限时3分钟答完。 答完后,系统即时报出答题对错情况、正确答案及最终得分。答题者在按动“开始答题”之前的所...
Ch 8.History of France & England Ch 9.Modern History of Germany Ch 10.Modern History of Greater Europe Ch 11.History of Modern Russia Ch 12.Countries & Capitals of the... Ch 13.Historical Timelines Ch 14.Contemporary Africa Ch 15.Contemporary Asia ...
Vedantu’s Class 8 English Ch 7 Question Answer focuses on building a strong understanding of the chapter's key concepts, ensuring students are well-prepared for exams. Along with NCERT Solutions for Class 8 English Chapter 7 - A Visit to Cambridge, you can refer toClass 8 A Visit to Camb...
VisualStudioServices.VS2019_8Services VisualStudioServices.VS2019_9Services VisualStudioServices.VS2019_10Services VisualStudioServices.VS2019_11Services VisualStudioServices.VS2022Services VisualStudioServices.VS2022_2Services Derived Microsoft.VisualStudio.VisualStudioServices.VS2022_3Services Attributes...
By employing Pd(OAc)2, Cs2CO3, or NaOH, and the new ligand (t-Bu)2PNP(i-BuNCH2CH2)3N (3a), an electronically diverse array of aryl bromides and chlorides possessing base-sensitive substituents (nitro, ester, and keto) provide coupling products with bulky aryl amines in good to excellent...
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class除了表示“班级”的意思,还会有“等级、阶级、阶层、类别、等级制度”等意思。 最开始的时候指的古罗马打仗期间召集起来的一群一群士兵,在军队里有各种各样的等级,它后来指古罗马社会里把人分成的6个等级,再后来就是现在的用法。 今天我们就用单词class来旧辅新知...