无效婚姻
参考答案：也称婚姻无效，是指不具备法定结婚实质要件或形式要件的男女结合，在法律上不具有婚姻效力的制度。
玉米、面粉和大豆混合食用，蛋白质的生物价会降低。( )
The newly built dining hall ,which is ______the old one., will open to students next Sunday.
A．as three times large as
B．three times larger than
C．larger three times than
D．three times as larger as
