依次填入下列各句横线处的成语,最恰当的一组是（    ）

①青年人难免产生一时的疑惑、彷徨、失落，但只要把握好思想的总方向,善于分析,正确抉择,就能在正误、真假、善恶、美丑面前    。

②网络本身的虚拟性会导致其反映的某些情况存在夸大成分,因此,要想做到    ,必须亲自走到基层一线,看看、问问、坐坐、聊聊,这样才能看到网上所看不到的东西。

③南开大学通过学校官方网站公布了该校2014年本科招生录取结果,罕见地晒出了全部的录取名单,不同地区招生名额差异、考生成绩排序等信息在这份大名单上    。

根据短文内容，判断下列各句正误。
      Hong Kong has about forty public beaches. Some of them are very famous around the world. People can go there for a swim. You can go to them by bus. To go to some beaches you must take a boat.
    You will swim there without danger if you remember these instructions:
    Never swim alone.
    Never go out in a boat if you cannot swim.
    Never swim after a meal or when you feel hungry or tired.
    Don't stay in the water too long.
    Remember: A red flag means that it is dangerous for anybody to go into the water. A blue flag means that it is dangerous for children.