【单选题】有关统计资料表明,关于卫生问题的投诉占了总投诉的______左右。
【单选题】There will be an exhibition of the _____ of dictionary in our city next week. We can learn more about the dictionary’s history there.
【简答题】压片制备物料必须具备的条件是________、_________、润滑性。
【单选题】According to the passage, it will be difficult to predict weather
A.
unless we learn more about chaotic systems
B.
because we don't have enough weather stations
C.
without more powerful computers
D.
until we understand the physical laws of atoms
【简答题】初级群体指的是其成员相互了解、熟悉,因而以感情为基础结成亲密关系的社会群体。 根据上述定义,下列属于初级群体的是( )。
【单选题】初级群体,指的是其成员相互了解、熟悉,因而以感情为基础结成亲密关系的社会群体。 根据上述定义,下列属于初级群体的是( )。