【判断题】轮胎式挖掘机作业前,应制动住行走机构,支好支腿后,方可进行挖掘。 ( )
【单选题】The price of cell phones_______ recently.
C.
has been fallen behind
【单选题】The sick cured and the lost found.
【单选题】按照《公约》的规定,一项确定的发盘应写明( )。
【单选题】按照《公约》的规定,一项确定的发盘应写明( )
【简答题】The movie has been on for half an hour. _____ _______ has the movie been on?