Karachi， Pakistan， is one of the hottest cities on Earth． In June 2015， more than 1，000 people died there during heat wave（热浪）． "It was a terrible time，" Shahzad Qureshi said． "We needed to do something about it．" After the heat wave， Qureshi took action． He started Urban（都市的） Forest． The group plants trees in cities in Pakistan．

    Trees help cool the air by providing shade（阴凉） and moisture（水分） through their leaves． Trees can help lower summer temperatures in cities by 2 to 5℃． Trees also provide a place for all kinds of animals． And they create a shady place where people can relax．

Urban Forest planted about 1，300 trees in a park in Karachi． The group uses a method that helps them grow quickly． In just three years， the trees were 30 feet tall． Qureshi hopes that one day， this park will become a forest of 50，000 trees． Since 2015， Qureshi and his team have helped cool the air by planting 14 urban forests in Pakistan． Twelve are in Karachi．

    In 2017， Qureshi helped plant an urban forest at Karachi Grammar School． First， he met with students there． He taught them about how trees help the environment． Then the students planted trees in the schoolyard． "They were excited about the project，" Muneeza Shaikhali says． She's a headteacher at Karachi Grammar School． "They themselves had been experiencing the high temperatures in the summer months．"

    There are many birds and colorful butterflies in the school． Students go outside during science class to study the forest． "It's like a library of trees in front of the kids，" Qureshi says． "They can learn the species（物种） and insects that are around． It's a beautiful thing to see．"

（1）What happened to Karachi in June 2015？　　

A． A wave hit this city．

B． A heat wave killed over 1，000 people．

C． Karachi became the hottest city．

（2）Who started Urban Forest？　　

A． Munecza Shaikhali．

B． Shahzad Qureshi．

C． The students at Karachi Grammar School．

（3）How did the students feel about the project？　　

A． Surprised．

B． Terrible．

C． Excited．

（4）During the science class， students go outside to　　．

A． study the forest

B． climb the trees

C． catch birds and butterflies

（5）What's the best title for the text？　　

A． Urban Forest

B． City of Trees

C． Education on Environment