As far as I know, this maths problem is _______________ that one.
#14428
A
twice so difficult as
B
twice as difficult as
C
as twice difficult as
D
so twice difficult as
推荐题目
This book ____ 12 units, _____ the unit of Music. 
#12997
A
contains. Including
B
includes; containing
C
contains, includes
D
including; contains
His remarks were ________ enrage everybody at the meeting.
#12901
A
so as to
B
such as to
C
such to
D
as much as to