A
(2020·深圳高三统一测试)When you read a book，you've probably noticed that a brand new book has a rather special smell，1.________differs from that of an older book.Where does 2.________ come from? Three sources—the paper，the ink and the glue.
Around 200 AD，the Chinese first came up with paper，one of the greatest 3.________(invent) in the world.It is made 4.________ wood. The wood must be processed with various chemicals 5.________(add) to change its structure，to remove acid and to whiten the paper.Then comes the ink—there are many kinds.Some fade with time，while others get 6.________(dark) than years ago.Finally，different glues are used to join the sheets together and attach the covers，whether hardcover 7.________paperback.Therefore，you can smell different chemicals 8.________(come) out of your new book.
Today，the forms of books 9.________(change) dramatically since the birth of eBooks.They might be 10.________(convenience)，but you can't give your copy to others as a present，and they don't smell as nice.
【语篇解读】 文章介绍了崭新的书会有一种特殊的气味的原因。
1．解析：考查定语从句。空处引导非限制性定语从句，先行词是a rather special smell，指物，且定语从句中缺少主语，故应填which。
答案：which
2．解析：考查代词。空处指代上文中的a rather special smell，故填it或that。
答案：it/that
3．解析：考查名词的数。one of后接名词的复数形式，故填inventions。
答案：inventions
4．解析：考查介词。be made from为固定搭配，意为“由……制成”，故填from。
答案：from
5．解析：考查非谓语动词。空处所在句中使用了with的复合结构，且add和various chemicals是动宾关系，故填added。
答案：added
6．解析：考查形容词的比较级。由空后的than可知，该空应填比较级darker。
答案：darker
7．解析：考查固定结构。分析句意可知，此处表达的是“是……还是……”，whether...or...符合该处句意，故填or。
答案：or
8．解析：考查非谓语动词。chemicals和come是主谓关系，故应用现在分词。
答案：coming
9．解析：考查动词的时态。根据since the birth of eBooks及句意可知，该处可用现在完成时或现在完成进行时。
答案：have changed/have been changing
10．解析：考查形容词。空处位于be动词之后，应填一个能在句中作表语的词，故应用形容词convenient。
答案：convenient
