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Too high house prices can be brought under control, _______ the authorities introduce a series of regulatory policies.

  A. even if                 B. as if                  C. so that               D. provided that

Too high house prices can be brought under control, _______ the authorities introduce a series of regulatory policies．

A．even if         B．a(chǎn)s if        C．so that        D．provided that

Too high house prices can be brought under control, _______ the authorities introduce a series of regulatory policies．

A．even if           B．a(chǎn)s if          C．so that           D．provided that