ChenYu，afifteen-year-oldgirl，isinGrade9．Thesedays，sheisbusypreparingforthechemistryexperimentforthehighschoolentranceexam（中考）．TheexperimentistomakeCO2．Theteacheraskedthemtopracticeingroups．Eachgr
Chen Yu，a fifteen-year-old girl，is in Grade 9．These days，she is busy preparing for the chemistry experiment for the high school entrance exam（中考）．The experiment is to make CO2．The teacher asked them to practice in groups．Each group had four students．At first，she didn't understand why they had to do group work．However，after doing the experiment many times with her group，Chen Yu found that some classmates built the equipment（设备） fast and well．Some were good at collecting the CO2．Each time she learned something new from others in the group work．It helped her make her job better．
Today，group work has become an important part of study for middle school students．Like Chen，many students are learning how to work together and hoping to learn new things from working with others．
Zhao Li is 13．She is in Class 5，Grade 7．She found that reaching an agreement（达成协议） is a big part of group work．Zhao's group needed to introduce an English song to their class．But they couldn't decide which to pick until the day before．Zhao and another girl liked the song little Me．but others liked The Boys．Then Zhao advised everyone to explain their choice．Finally the team agreed to choose the song Little Me．
There are many thoughts in a group．We should always be brave to speak out our opinions．
61．Chen Yu，a fifteen-year-old girl，is a student in___．
A．Grade Four
B．Grade Five
C．Grade Seven
D．Grade Nine
62．What did Zhao's group need to introduce to their class？___
A．Chen Yu's group．
B．New things．
C．An English song．
D．The experiment
63．When Zhao's group picked a song，Zhao advised everyone to___．
A．explain their choice
B．speak out their opinions
C．pick the song Little Me
D．give up their thoughts
64．the students can___ by group work．
A．help them find a good job
B．learn how to work together
C．repair the equi