混凝土是由胶凝材料、细骨料、粗骨料、水及必要时掺入的化学外加剂组成。
参考答案:对
After being criticized by her mother, she spoke out the words ______ in her heart for many years,
tears ________ her eyes.[ ]
A. having hidden; filling
B. hidden; filled
C. hiding; being filled
D. hidden; filling
有的大学生毕业后不急于找工作,把户口档案挂靠在大城市的人才市场,自己或准备考研或打起短工或尝试创业,俗称“漂”族,你对此有何看法?