647页62题:A 1972 agreement reduced the amount of phosphates that municipalities had been allowed to dump into the Great Lakes
为什么原句不对,要选D:reduced the amount of phosphates that municipalities are allowed to dump.呢?不是主从句时态要一致吗?
652页93题:The Supreme Court awarded the Centra Intelligence Agency broad discretionary powers enabling it to withhold from the public the identities of its sources of intelligence information.