rose双机热备方案:An affirmation is a pre-planned verification.

An affirmation is a pre-planned verification. 求助翻译：An affirmation is a pre-planned verification. A dictionary is an useful book.找错 A cow is as strong an animal as a horse. An apple a day is good ____ your healh . Is Romeo and Juliet an opera or a play?why? a zebra horse(an animal that is a cross between a zebra and a horse) it is an hell-like mountain.为什么要用an不用a呢？ 这句英语“Plants flowers is a knowledge, also is an art!” 的中文是什么意思？ 有一处错误，找出并改正：Andy is a Chinese . Carl is an English.