【单选题】This is such a wonderful film ___ we have never seen.
【单选题】The design of this architecture shows a great deal of ______ We have never seen a building of such a type before.
【单选题】The design of this auditorium shows a great deal of _______. We have never seen such abuilding before.
【单选题】用右手握住通电直导线,让大拇指指向( )的方向,那么四指的指向就是磁感线的环绕方向