求助？高分语法里的

uniqueness

1。The Canadia province of Newfoundland (has) a rocky coast, a
(moisture) climate, and (probably the best )cold-fishing (areas) in the
world.

A 改称have, 我觉得是不是要把B改称moist牙？

私下里认为新东方的高分语法光盘里有不少错误，不知怎么回事？

2。 Ducks have been domesticated for many centuries -------commercially for their meat and eggs.

A raised   B and are raised   C  raised as    D are raised

选 B, 为什么不选A, 我想使过去分词后置修饰ducks的， 为什么不对？

apply1

2duck is Subject, have been (verb).however,one sentense only have one verb.

如果认为”想使过去分词后置修饰ducks的“去掉for many centuries的修饰。就不成句子了。

！谓语单一原则。

！主语一致（单一）。很重要