947.The visitor asked to have his picture taken _____ stood the famous tower.
A.where
B.at which
C.that
D.when
948.We hope the measures to control house prices,_______ are taken by the government, will succeed.
A.which
B.that
C.what
D.they
947.答案是A;此处where引导的是地点状语从句，相当于at the place where引导的定语从句。
948.答案是A;根据句意和习惯搭配take measures推断，此题先行词为measures，而不是prices。
