When a couple of movies about ballroom dancing（交誼舞） came out over 10 years ago，some current Long Island students were babies in arms.Now they are in each other's arms as they learn their dancing lessons.
   The lesson plan，which includes the tango，waltz and swing，is part of Dancing Classrooms Long Island，a program of the nonprofit CoDanceCo Inc.It helps the students to build self-confidence，cooperation skills，good manners and respect for others. "We aim to help the youth learn essential life skills through the process of social dance，" said Nancy Duncan，founding director of CoDanceCo Inc.
   Duncan contacts school to participate in the program，or school officials call her or learn of the program by word of mouth.Duncan launched the program in 2008 in three schools，while in 2015 it was in 18 schools in Long Island，serving nearly 2，000 students.Over the years，more than 10，000 students have been involved.
   "Dancing Classrooms is not just about teaching ballroom dancing，" Duncan said. "The dance is a tool for getting the children to break down social barriers（壁壘），learn about honor，and respect others who may be different."
   "Every 30 seconds when a dance is finished，the 'gentleman' rotates to the next partner so everyone gets to dance with everyone，" Clarke，a teacher of the program said. "We ask them to look at each other while they're dancing."
   Students also learn a diverse range of ballroom dances.They learn about the music and culture of each dance form and how to dance with a partner.The goal is to help children develop a sense of physical and emotional well-being.
   "I really like it，" Adriana Wool，10，a student at William S.Covert School，said after finishing a lesson. "It's a learning opportunity；it's also fun.There are other kinds of dances，but ballroom dancing is more elegant（優(yōu)雅的）." Her classroom teacher，Joe Gallina，said students who experience the program show more respect for one another. "They build relationships，'' he said. "I see more boys talking to girls，and it's an opportunity for students that may not shine in the classroom to be good at something."

（1）Which of the following statements is true according to the passage？

B

B

A．Over 20，000 students have participated in the program recently.
B．School officials may know the Dancing Classrooms Long Island from a student who has taken the lesson.
C．Babies in arms used to be taught to learn ballroom dancing.
D．Duncan started CoDanceCo in 2008 in 21 schools.
（2）What can we learn about CoDanceCo from the passage？

A

A

A．It teaches kids confidence and cooperation.
B．It teaches difficult dancing steps to students.
C．Most teachers get involved in the program it offers.
D．It only offers face-to-face instruction.
（3）What does the teacher think of the influence of dance class？

D

D

A．Relaxing.
B．Unexpected.
C．Boring.
D．Beneficial.
（4）What is the author's purpose in writing the passage？

A

A

A．To introduce a meaningful dance program.
B．To share dancing experience of children.
C．To recommend different types of dances.
D．To promote students' social ability.