After Hurricane Maria swept through Puerto Rico in 2017 and caused huge damage，researchers found rhesus macaques，a species of monkey living on Cayo Santiago，became more sociable with each other，according to a study published in the journal Current Biology.
   "The monkeys live in a highly competitive society and can become aggressively protective over resources like food and water，" said study author Camille Testard，a professor of neuroscience at the University of Pennsylvania's Perelman School of Medicine. "That's why researchers predicted that after the hurricane，the monkeys would stick with their closest friends in order to survive，" Testard said.Instead，the island's residents became more tolerant of each other and greatly expanded their friend group.
   "To measure the monkeys' socialization and friendship-building，researchers tracked who they groomed （梳毛），which is one of the ways monkeys bond with one another，" Testard said. "It serves a similar function for us to getting coffee or a beer with friends，" she added.After the hurricane，the "grooming networks" became denser，Testard said，meaning there were more connections being formed compared to the monkeys' behavior before the storm.The scientists found the animals made friends with friends of their friends，which she said is a common "easy" route to making friends that's mirrored in human social circles.
   The researchers didn't know why the monkeys decided to make more friends，but Testard assumed it could be "a strategy to gain tolerance and support from the greatest number of individuals and thereby access to limited resources like shade."
   The monkeys could be forming additional bonds to "buffer" them from future hardship from the natural disaster，said Brenda MeCowan，a professor of population health and reproduction，who was not involved in the study.She said the findings also provide an insight into how humans might cope with the increasing threat of climate crisis. "Rhesus macaques are close evolutionary relatives to humans and share many features of their biology and behavior with us， "said McCowan. "Our best friends can give us many things，but sometimes，what we need is a social network where everyone is just friendly enough."

（1）What was the researchers' prediction about the monkeys alter the hurricane？

A

A

A．They would narrow their circle of friends.
B．They would spend more time making friends.
C．They would become less aggressive than before.
D．They would value the accessible resources.
（2）Why do the monkeys groom each other according to Testard？

A

A

A．To build closer bonds.
B．To get food opportunities.
C．To keep safe physically.
D．To show tolerance and support.
（3）What's the message McCowan conveys in the last paragraph？

B

B

A．We must learn to live in harmony with wildlife.
B．We should be more united to face global challenges.
C．Human behavior has a great influence on monkeys.
D．Climate crisis is now the biggest threat to our survival.
（4）Which can be a suitable title for the text？

D

D

A．Monkeys and humans have similar behavior.
B．Monkeys managed to survive natural disasters.
C．Biological ties do exist between humans and monkeys.
D．Monkeys formed unexpected friendship after the hurricane.