题目

（题文）依次填入下面一段文字横线处的语句，衔接最恰当的一组是（ ）我国是食品生产和消费大国，保障食品安全需要生产经营者诚信自律，更需要严格的法律制度约束和有效监管。 ， 。 ， ， 。这样才能有效解决食品安全领域损害群众利益的突出问题，切实增强消费安全感。①强化执法措施，严惩违法犯罪分子②食品产业涉及环节多，哪一个环节出现漏洞都会给食品安全带来严重威胁③创新食品安拿监管机制④坚决淘汰劣质企业，以震慑所有企  ---- ______ he dropped out of school? ----His family had run into financial difficulties. A. Why was it that B. Why was that C. Why was that it  C. Why was it