写数时,哪一位上一个单位也没有,就不写。[ ]
错误
下列各组物质用高锰酸钾酸性溶液和溴水都能区别的是
A.苯和甲苯
B.1-己烯和二甲苯
C.苯和1-己烯
D.己烷和苯
It is the film _______ director is Steven Spielberg _______ attracts quite a few viewers throughout the world.
A.that; who
B.which; that
C.whose; that
D.whose; who