How many parts is an article usually composed of? What are they?
Three parts: introduction ,body and conclusion.
暂无解析
句子写作：Iwasveryembarrassed.Ididn’tknowwhatIshoulddo.
Tounderstandthesentence,youshouldanalyzeitsparts________.
句子写作：Thepianoplayerbegantosingloudly.
流行性乙型脑炎的传染源是
在发生人感染H7N9禽流感确诊病例的县(区)内，应当在病例确诊后开展为期()的强化监测