下列反应中，调节反应物的用量和浓度，可以改变反应产物的是（　　）

说说下列句子运用的修辞手法

天似穹庐，笼盖四野。

增加：在缺词处加一个漏字符号（∧），并在其下面写出该加的词。

删除：把多余的词用（\）划掉。

修改：在错的词下划一横线，并在该词下面写出修改的词。

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。

    We all enjoy read short stories by O. Henry, such as "The last leaf" and "The Gift of Magi".

    Fewer writers in the world have ever put into prison. And even fewer took great success in prison. While O. Henry, the famous short story writer, was one of him. O. Henry, his real name was William Sidney Porter, was born on September 11, 1862.

    In 1884, O. Henry entered the First National Bank as teller (出纳). On February 10, 1896, Henry was said to have something to do with the disappearance of $1,150 from the bank. He was sentenced to five years imprisonment

    In order to make money support his family, O. Henry began write stories to magazines. These stories became quiet popular with readers.

    O. Henry died in New York in January 5, 1910. He was buried in North Carolina, the state where he was born.

            爱莲说
             周敦颐
      水陆草木之花，可爱者甚蕃。晋陶渊明独爱菊。自李唐来，世人盛爱牡丹。予独爱莲之出淤泥而不染，濯清涟而不妖；中通外直，不蔓不枝，香远益清，亭亭净植，可远观而不可亵玩焉。
      予谓菊，花之隐逸者也；牡丹，花之富贵者也；莲，花之君子者也。噫！菊之爱，陶后鲜有闻。莲之爱，同予者何人？牡丹之爱，宜乎众矣！