第二节 语法填空 (共10小题，每小题1.5分，满分15分)In this constantly changing world, how to put the knowledge

　　21

　　(gain) every day into

　　22

　　(real) has interested numerous people. As a proverb goes, “Knowledge is a treasure, but practice is the key

　　23

　　it.” Apparently, this saying

　　24

　　(try) to deliver the message

　　25

　　we ought not to stop practicing it if we

　　26

　　(true) want to master the knowledge we learn,

　　There are several reasons

　　27

　　(account) for this statement. To begin with, human beings are forgetful beings; therefore, only when we use knowledge, make

　　28

　　(mistake), and try to use it again will we be able to remember it by our heart. Moreover, knowledge has become growingly complicated and we can seldom grasp the essence of it if we do not practice it again and again.

　　Practicing, to sum up,

　　29

　　(be) of greatest importance for those who are determined to learn knowledge well. As a student, I hope that the young can focus more attention on practicing

　　30

　　they learn.

　　21.gained

　　考查非谓语。从结构判断此处是非谓语做定语，被修饰词knowledge和动词gain之间是被动关系，用过去分词，填gained。

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