“苏湖熟，天下足”表明我国的经济重心发生了转移，其方向是（    ）

阅读理解

    Many people like going shopping at weekends after five days'hard work．Supermarkets are good places for shopping．

    Before you go into the supermarket，get a trolley．Trolleys are usually outside the entrance(入口)．It's good to push your trolley around and take what you want．If you only plan to buy a few things，get a basket．Baskets are usually in the supermarket．You can buy different kinds of things in the supermarket．You can buy fruit and vegetables，meat and fish，bread and cakes，ice cream and magazines．

    There is a big supermarket near my home．My parents like shopping there but my sister Liz and I don't．There'll  be a sale in it on Saturday．My parents are going to buy some carrots and tomatoes．

根据材料内容选择最佳答案。

下列说法错误的是(　　)

下列句子中语意不明，存在语病的是哪几句?（     ）

①“有偿新闻”应当受到严肃批评，这是极其错误的，至少可以举出三点

② 公安局掌握着北平暗藏敌特的名单，优先抓捕这些暗藏的敌特，发现一个抓一个。

③ 荆头山农场正确地对待用户批评，实事求是，不以玉掩瑕。

④ 限于技术设备，古生物遗骸不得不送到外国去鉴定，不仅耗时费钱，还得看人家脸色屈就。