问题
选择题
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
答案
选D。考查状语从句。句意: 如果当局采取一系列的调控措施的话, 就可以抑制过高的房价。provided that倘若, 以……为条件; even if即使; as if好像; so that为的是, 因此。