题目

Having ___________ the training of MS Company, he was ___________ an important position in management.A. accepted ;offered                             B. received ;offeredC. offered; received                             D. received; accepted 答案：B 解析：受到教育或培训，习惯上用receive;第二个空如果用accept，不能用被动式。一定温度下，下列溶液的离子浓度关系式正确的是（ ）A. pH=5的H2S溶液中，c（H+）=c（HS－）=1×10－5mol·L－1B. pH=a的氨水溶液，稀释10倍后，其pH=b，则a=b+1C. pH=2的乙二酸（H2C2O4）溶液与pH=12的NaOH溶液任意比例混合：c（Na+）+c（H+）=c（OH－）+c（HC2O4－）D. pH相同的①CH3COONa②NaHCO3③NaClO三种溶液的c（Na+）：①>②>③