【简答题】We ______ him the news because he knew it already. A.told B.would have told C.needn't have told D.needn't to tell
【判断题】鸡腿菇采摘后,如果不及时食用,没几天会产生大量黑水,这腿菇的后熟现象快速造成的。
【单选题】To survive in the intense trade competition between countries, we must ______ the qualities and varieties of products we make to the world market demand.
【单选题】( )是破坏性程序和计算机病毒的根本差异。
【单选题】某经销商对奥迪保养前的准备工作,实施正确的选项是
D.
准备专用维修诊断设备(如: VAS5052 )
【单选题】--- Have you told him we have changed the plan? I _____ have, but I haven’t done it yet.