Why does the idea of progress loom so large in
　　the modern world? Surely because progress of particu-
　　lar kind is actually taking place around us and is more
　　and more manifesting. Although mankind has underg- __1__
　　one no general improvement in intelligence or morali-
　　ty, it has made extraordinary progress in the accumu-
　　lation of knowledge. Knowledge begins to increase as __2__
　　soon as the thoughts of one individual could be com-
　　municated to another by mean of speech. With the in- __3__
　　vention of writing, knowledge could be communicated
　　and stored. Libraries made education possible, and
　　education in turn added libraries: the growth of knowl- __4__
　　edge followed a kind of compound-interest law,
　　which was greatly enhanced by the invention of print-
　　ing. All this was comparatively slow until, with the
　　coming of science, the tempo was suddenly risen. __5__
　　then knowledge began to be accumulated according to
　　a systematic plan. However, as soon as new knowl- __6__
　　edge is acquired, it is now turned to practical ac-
　　count. What is called “modern civilization” is not the
　　result of a balanced development of all man’s nature,
　　but not of accumulated knowledge applied to practical __7__
　　life. The problem now facing humanity is: what is go-
　　ing to be done with all this knowledge? Like is often __8__
　　pointed out, knowledge is a two edged weapon which
　　could be used equally for good or evil. It is now being __9__
　　used indifferently for both. Could any spectacle, for
　　instance, be more grimly whimsical than that gunners __10__
　　using science to shatter men’s bodies while, close at
　　hand, surgeons use it to restore them.

　　参考答案及解析：
　　1.把manifesting改为manifest
　　manifesting不能做形容词,而如果把它理解成现在进行词,后面又缺乏宾语,所以应该改为形容词manifest,表示 “显然的,明显的”.
　　2.把begins改为began
　　根据下一行出现的could可以判断本句是过去时.
　　3.把mean改为means. by means of 是固定用法.
　　4.在added后面加上to
　　如果add后面不加to,此句就表示 “把图书馆加到某个事物上去”,加上to,表示给图书馆增加了内容,符合句义.
　　5.把risen改为raised
　　rise是不及物动词,不能用于被动语态.
　　6.把However改为Moreover
　　此句的意思是:新知识一经获得,马上就得到实际应用.这是对上文的追加,不存在转折关系,因此应该用moreover.
　　7.删除but后面的not
　　8.把Like改为As
　　9.把could改为can
　　主句为现在时,而从句也不表示虚拟,所以应该用现在时.
　　10.在that后面加上of.
　　为了避免重复,这里用that指代spectacle,后面的gunner using是that 的内容.因此应该用介词of引出.