京剧的花脸所属的行当是( )

Which of the following does a teacher want his / her students to develop if he / she guides them to takenotes key words, abbreviations and symbols?

标志着中国进入航天时代的事件是(    )

如果确定幼儿的关节脱臼了，不可以采取以下哪项措施?( )

我国的舟山渔场每年都有一段时间的“休渔期”，其主要原因是()。