Some people disagree with the idea _____
问题:
Some people disagree with the idea _____ digital textbook will improve education quality while the traditional textbook is out of date.
A.because
B.which
C.that
D.as
Some people disagree with the idea _____ digital textbook will improve education quality while the traditional textbook is out of date.
A.because
B.which
C.that
D.as