Gravy started working as a comfort dog at Grand Ledge High School in Michigan in September.She showed off tricks in the hallways with her handler （馴獸員），Capra，and made students laugh aloud.When students learned that Gravy's first birthday fell just before Thanksgiving break，they asked Capra if they could throw a party.Capra said sure，thinking there wouldn't be many people interested.However，on the big day，there were several hundred students in this gym.
   The pandemic （大流行?。?has been hard on students across the United States.Many young people experienced loneliness and the loss of loved ones.To solve the problem，schools have hired social workers and increased the number of their social-emotional learning classes.In some cases，they bought dogs.
   Undoubtedly，the dogs make kids happy."He's kind of like a rock star；when the kids see him coming，they smile，" said Traci Souva，an art teacher at North Huron Schools who trains Chipper，another comfort dog. "A lot of times the kids will tell Chipper what's wrong rather than adults，and that's pretty amazing."
   There are possible blemishes of having dogs in school.These include cleanliness，and student fears.But school officials say these are all manageable.The dogs are highly trained and always with a handler，so no student is forced to communicate with the dogs if they don't want to.
   Since the pandemic，demand for trained dogs in schools"has just increased，" said Nikki Brown，a dog trainer and the director of Canines for Change，a nonprofit that trains dogs for work in schools.Over the last year，her organization has provided dogs to at least seven areas in Michigan，including Grand Ledge. "The dogs are highly trained to be in a school environment，" she added."They are trained to work with kids with emotional problems.They sense stress.By the dogs' behaviour they might warn a teacher of a kid who is struggling emotionally."

（1）Which of the following best describes Gravy as a comfort dog？

B

B

A．Tricky.
B．Popular.
C．Humorous.
D．Caring.
（2）What does the underlined word"blemishes" mean in paragraph 4？

B

B

A．Requirements.
B．Disadvantages.
C．Influences.
D．Suggestions.
（3）What can we infer from Nikki Brown's words？

D

D

A．Working on campus brings a lot of pressure to dogs.
B．There is a high global market demand for trained dogs.
C．School environment can affect dogs' behaviour greatly.
D．The dogs have the ability to notice students' mental illness.
（4）What is the best title for the text？

A

A

A．How dogs relieve students' mental problems
B．How dogs ensure students' safety on campus
C．How dogs enrich students' after-school activities
D．How dogs develop students' sense of responsibility