【简答题】The girl is singing an English song in the next room is Tom’s sister.
【单选题】择己所爱原则属于职业选择原则中的 ( )
【简答题】某工程双代号网络图如下图所示,其绘图错误有( )。
【简答题】The girl spends half an hour walking to school.( 同义句改写 ) It ________ the girl half an hour to ________to school.
【单选题】_____that the girl with an incurable disease would die soon, the boy decided to help her make her last days beautiful and meaningful.
【单选题】A 30-kg girl steps to shore from a 60-kg boat, giving the boat an acceleration of 2 m/s2. If water resistance is neglected, the girl receives an acceleration of