【Abstract】Lead-in is the first step of English classroom teaching， which has a big influence on the following teaching ......

H7N9禽流感引发的“战疫”，再次验证了家禽行业抵御风险的脆弱与无力。“没有市场，何谈复苏？”面对家禽业的未来走势，宁波养殖人不禁发......