题目

23. Today CCTV offers a great _______ of programs to meet different needs and _______. A. variety; tastes        B. many; interests     C. deal; likes             D. number; habits 答案：A取某一元醇13.0 g跟乙酸混合后，加入浓硫酸并加热，若反应完毕时，制得乙酸某酯15.8 g，回收该一元醇1.4 g，则该一元醇是A.C7H15OHB.C6H13OHC.C5H11OHD.C2H5OH