题目

有一粗细均匀的金属棒，体积是80cm3，质量是216g，它的密度是         kg/m3。若从全长的三分之一处截成两段，这两段的密度之比是           。 答案： 2.7×103 ； 1：1—What do you usually do at the weekend? —I ________ the program “If You Are The One” (非诚勿扰) with my family. A．used to watch                          B．was used to watching C．am used to watch                       D．get used to watching