北京第二例h7n9

从前，山上住着一个老婆婆，栽了一棵枣树。老婆婆照顾枣树，可细心啦！捉虫,浇水，施肥.秋天，树上结满了枣子，枣子长得又红又大。 有一天，老婆婆进城去了。忽然，刮起了大风，下起了大雨，“劈劈啪啪”，把枣子全都吹落到地上……。Local residents and thousands of vacationers flock to Cape Cod every summer begin to grapple with this alarming new reality of sharks while following the science to investigate.。