The book is very _________．I'm _________ in it．

A．interested；interested                                B．interesting；interesting

C．interested；interesting                                D．interesting；interested

There are many idioms（習(xí)語）in English that are about animals．Today let's chat a little about some of the idioms about dogs that make English language fun and colorful．

We love dogs；they are our best friends．When you first started to learn English，your teacher might teach you a number of phrases about dogs，such as：“you are a lucky dog，” “I'm dog tired，” “every dog has its day，” or “our team was the underdog but won the first place at last．”

When I first got into high school。my English teacher used the idiom “dog-ear”，which interested me very much．This word can be used as a noun，a verb，and an adjective as well．As a noun，it means a turned-down（折疊的）corner of a page as a bookmark（書簽）．As a verb，it means someone makes a bookmark by turning down the corner of a page in the book．And，as an adjective，the word describes an old book with many broken pages．Examples：

John made a dog-ear（noun）of the page he was reading before closing the book．

Jane was reading a book；when the telephone rang，she dg-eared（verb）the page before answering the phone．

In the old room，the children found some dog-eared（adjective）books left there for more than 30 years．

The idiom “dog-ear” gives a lively image of a page being turned down like a curled（卷起來的）dog ear，but some dogs don't have curled ears；rather，they have pointed（豎起來的）ears．

1．Which of the following can be the best title of the passage?

A．Idioms about colors．                               B．Idioms about history．

C．Idioms about animals．                               D．Idioms about dogs．

2．How many idioms about dogs are mentioned（提及）in this passage?

A．3．                       B．4．                       C．5．                        D．6．

3．Which of the following statements is NOT true about the meaning of the idiom “dog ear”?

A．It means a turned-down corner of a page as a bookmark．

B．It means someone makes a bookmark by turning down the corner of a page in the book．

C．It means an old book with many broken pages．

D．It means something is short and small like a dog's ear．