【单选题】A friend is someone ______ says, “What! You too? I thought I was the only one!”
【单选题】以下哪项不是疫源地消灭必须具备的条件
C.
所有易感接触者经过该病最长潜伏期未出现新病例或被证明未受感染
【判断题】有机物运输是决定产量高低和品质好坏的一个重要因素。
【单选题】When someone says to you, “How beautifully you sing!” You should reply, “ .”
【判断题】有机物质运输是决定产量高低和品质好坏的一个重要因素。( )