增加：在缺词处加一个漏字符号（∧），并在此符号下面写出该加的词。

删除：把多余的词用斜线（＼）划掉。

修改：在错的词下划一横线，并在该词下面写出修改后的词。

注意：1).每处错误及其修改均仅限一词；

2).只允许修改10处，多者（从第11处起）不计分。

    Once there had a wooden pagoda（塔）in my village. It had a history of over eight hundreds years. It was such beautiful and famous that many tourists came to visit it every year. They took photos, write down their names on the walls and even threw rubbishes everywhere.

    Later the pagoda was destroyed because of a fire in the forest nearby it. The villagers had to spend a great deal of money build another pagoda, that looked like the old one. Now not only the villagers realize the importance of protecting the pagoda but also tourists know that they should try his best not to cause damage to it.

下面语段空格处依次填入的词语最恰当的一项是（    ）

  人与自然的和谐在于要保持对自然的_________：敬畏自然，遵循规律；人与人的和谐在于人要有一种_________的心态：待长辈_________、待平辈_________、对晚辈谦逊，心胸似海，志存高远。

我国使用“长征3号甲”运载火箭的动力是由高氯酸铵（NH₄ClO₄）分解所提供的，反应方程式为2 NH₄ClO₄N₂↑+Cl₂↑+4X↑+2O₂↑，则X的化学式为（ ）