18．D　好的笔可以弥补书写差的缺点。show up使显示出；differ from与……不同；break down损坏，发生故障；compensate for 赔偿，补偿损失。

　　19．A　和印刷体比较，写得好（指签名）也并不能引起注意。

　　20．B　at most 至多；for example 例如；in brief 总之；on purpose故意地。

　　三、试题模拟

　　Long time ago, if a child had some problems in his life, he might go home and write in his

　　___1__. Now, a child with the same problems might go onto the Internet and write about them in a blog（博客）. In many ways, a diary and a blog are very

　　__2__. So, what makes blogging different from writing in a（an）

　　__3__

　　diary?

　　The biggest difference is that a blog is much more

　　__4__

　　than a diary. Usually, a teenager treats his diary like a book full of

　　__5___

　　that he does not want to

　　__6__.

　　It's interesting that someone who writes in a blog

　　__7__

　　a diary will probably write nearly the same information.

　　I have a little sister, and sometimes I go online to read her blog. She

　　__8__

　　about things like waking up early for swimming practice and not studying enough for her chemistry test.

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