选A
感叹的中心落在名词上,用what引导感叹句
What + a/an + 形容词 + 主语 + 谓语 !
What + 形容词 + 不可数名词 + 主语 + 谓语 !
What + 形容词 + 可数名词复数+ 主语 + 谓语 !
What a beautiful house it is !
What clean water it is !
What lovely girls they are !
感叹的中心落在形容词或副词上,或整个句子,用how引导感叹句
How + 形容词或副词 + 主语 + 谓语 !
How blue the sky is !
How fast he swims !
How Tom loves his wife !