题目

设NA为阿伏加德罗常数的值，下列有关说法不正确的是 A. 标准状况下，48g O3含有的氧原子数为3NA B. 1 mol OH－中含电子数目为10 NA C. 0.2mol·L－1的NaCl溶液中含有的Na+数目为0.2NA D. 常温常压下，3.36L CO中含有的原子数小于0.3NA 答案：C单词拼写（共10小题，每题1分，共10分）【小题1】1.  Laughter has an effect on most of the major body systems and functions. These effects have been _______ (认可) by scientists. 【小题2】2.  I wanted to _____(提取) 40 dollars from the bank account, but I was so forgetful that I couldn’t remember how it was spelled. 【小题3】The paintings of the impressionists were not as _____ (详细的) as those of earlier painters.【小题4】If a person had an unusual physical ______ (特征), it became part of his name. 【小题5】Some poems tell a story while others try to c     (表达) certain emotions. 【小题6】One can only have deep _______(同情) for these once-living creatures. 【小题7】But as well as having meaning from the characters, Chinese names can also have  s   (重要性) according to their sounds..【小题8】When the volcano erupted, the earth began to t      (颤抖).【小题9】Children who can see and hear learn language easily but for Helen, it was a _____(逐渐的) and sometimes painful process.【小题10】Heavy snow last winter caused long _____(延误) at the airport.