题目

A）根据句意及首字母提示完成单词。 1．My job i________ cooking for you．You needn’t cook for yourself． 2．The sweaters here are in v________ colours，not only white． 3．I have an a________ with my doctor at ten o’clock so I must go to see him now． 4．For 27 years，passengers traveled a________ the Atlantic on this jet plane． 5．The teacher kept n________ to the girl，as if he was pleased with her answer． B）根据括号中所给汉语完成单词。 6．He is one of the ________（老板）I have ever met． 7．I am ________（盼望）to pass the difficV mL密度为ρ g/mL的某溶液，含有相对分子质量为M的溶质m g，该溶液中溶质的质量分数为W%，物质的量浓度为c mol/L那么下列关系式正确的是（　　） A、m=VpW1000B、c=1000pWMC、W%=（cM1000p）%D、c=1000mVM