We had a long debate _____ whether we should spend so much money on space technology.( )(本题2.0分) A、 as to B、 so as C、 as about D、 so as to

We had a long debate _____ whether we should spend so much money on space technology.( )(本题2.0分)
A、 as to
B、 so as
C、 as about
D、 so as to

出自：河南科技大学-大学英语

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