13．One of my best friends went abroad to enjoy her holidays，so the job of looking after her dog Missy has been given to me．A few months ago，Missy came to my friend's house．She looked terrible．She has beenabused for a long time．
When we first visited my friend and Missy，my friend had to gently pull her over on a lead （牽繩） to get her to come to us．She wanted to come but afraid to do so---the poor，beautiful thing．Clearly Missy came to the right home．My friend has given birth to a baby of his own and shows the love of a mother．This is just what Missy needs．Thanks to the love of my friend，she has changed into a new dog step by step．Sadly，she is still afraid of strange humans．I hate to imagine what the dog must have gone through．
Now，Missy trusts me completely，so I can touch her berry（肚皮）．While standing，she will jump up so gently to be closer to me，putting her paws（爪子）on my legs as she looks at me with those beautiful eyes．
Missy is really brave．She has the courage to try again，to open her hearts，and to know that not everyone is the same kind of people as before．Keep it in mind that tomorrow is another day．
51．The underlined word"abused"in the first paragraph meansC．
A．保護(hù)
B．喂養(yǎng)
C．虐待
D．挨餓
52．The writer feltB when she first saw Missy．
A．proud and relaxed
B．sorry and caring
C．a(chǎn)fraid and angry
D．sad and disappointed
53．The writer thought it was good for Missy to stay with her friendA．
A．because her friend could offer the love of a mother to Missy
B．because her friend had more free time to take care of Missy
C．because her friend stayed long at home and felt quite lonely
D．because her friend helped Missy to accept different people
54．The fourth paragraph mainly tells usC．
A．the writer has learned the skills to communicate with Missy
B．the writer has made Missy understand and follow her orders
C．the writer has succeeded in winning the trust of Missy
D．the writer has come to realize that Missy is a beautiful dog
55．According to the passage，what is the writer's suggestion？A
A．No future in the past
B．Every dog has its day．
C．All efforts will pay off．
D．Never too late to mend．
