_________ the whole process for the stud
问题:
_________ the whole process for the studies of cancer took more than a year, the technology is moving so fast that it will soon take just weeks.
A.How
B.Because
C.If
D.While
_________ the whole process for the studies of cancer took more than a year, the technology is moving so fast that it will soon take just weeks.
A.How
B.Because
C.If
D.While