选择题：下列铰链四杆机构中,能实现急回运动的是( )(本题2.0分) A、 双摇杆机构 B、 曲柄摇杆机构

Each of us, it (turn out ), has a special dream character.

This medicine is (poison) if taken in large quantities.

Nearly a week passed before the girl was able to explain what (happen) to her.

. The Smartphone is getting more attention in the house than the child. 回答A. 在这个

__ __, we will review all the lessons before the final exam.A.If time will permi