【单选题】If no importance is attached to collecting information, we cannot survive in such a(n)______competitive society, because it is the basis on which we make our decisions.
【单选题】母兔跟一只公兔交配后 12~14h,再跟同一只公兔交配一次的配种制度称为( )。
【判断题】 常见的异常乳分为生理异常乳、化学异常乳、微生物异常乳和病理异常乳。
【判断题】判断题:亚洲人各种发色都可以尝试,适合染金黄色头发。