基因治疗是指（   ）

在下面一段文字横线处补写恰当的语句，使整段文字语意完整连贯，逻辑严密，每处不得超出15字。

    诗歌与绘画是人类文明的历史长河的两岸。人们常说：“诗画同源”“诗是有声画，画是无声诗”，可见， ____ 。我国是一个诗的国度，  ____。从最古老的《诗经》，到两晋的山水田园诗，再至唐诗宋词元曲，数不胜数。“关关雎鸠，在河之洲”既可以为诗，又可以为画。既可以为山水、为人物，亦可以为花鸟，是诗中有画的最早实据。但从接受的艺术感官和心理功能来说，绘画是视觉的艺术，通过眼睛就可以直接掌握，给予想象的空间较少； ____，不是仅凭感官就能一下子掌握的，它需要由记忆和想象来共同完成。

侯氏制碱法的主要反应之一为：NaCl+CO₂+NH₃+H₂O═NaHCO₃↓+NH₄Cl，下面对该反应涉及的有关知识发表的部分见解，其中不正确的是（　　）

根据短文内容填空。

      A seabird named Lydia recently made a 26-day nonstop(不间断的)journey of about 2,500 mi­les, just to search for food for her baby. She is fitted with a satellite tracking device (卫星跟踪仪). Her trip started on Oct. 18 from Christmas Island in the Indian Ocean. The trip is known as the lon­gest nonstop journey by one of these endangered seabirds.

      Before that, this kind of birds was known only to fly a few hundred miles from where they live, staying away for just a few days at a time. They usually fly over the sea.

      The scientists feel it strange that Lydia made such a long, nonstop journey and flew overland. So the above facts raise some serious questions about efforts to stop the decline(减少)of the birds. The number of the birds has fallen by 10 percent over the past 20 years.

Besides, the scientists are surprised that she was away from her baby for such a long time. They wonder why she needed to go that far. Maybe it shows that fish resources (资源)around Christmas Island are not large enough now. That might explain the slow decline of the bird 一 sea pollution(污染) is serious.

概况：200年，双方在____进行决战，曹操偷袭袁军的屯粮，歼灭袁军主力，为以后____打下基础。