题目内容：
By selling special coffee at a coffee cafe,the students are________回答下面的题目Every morning, kids from a local high school are working harD．They aremaking and selling special coffee at a coffee oaf6．They arealso making a lot of money．These students can make up to twelve hundred dollars a day．They areselling their special coffee to airplane passengers．After the students getpaid, the rest of the money goes to helping a local youth project．These high school students use a space in the Oakland airport．It isusually very crowdeD．Many people who fly on the planes like to drink thespecial coffeE．Onecustomer thinks that the coffee costs a lot but it is good and worth it．Most customers are pleasant but some areunhappy．They do not like it if the coffee cafe is not open for business．Thestudents earn $6.10 an hour plus tips．They also get school credit while theylearn how to runa business．Many of the students enjoy the work although it took some time tolearn how to do it．They have to learn how to steam milk, load the pots, and addflavor．It takes some skill and sometimes mistakes are madE．The most commonmistake is forgetting to add the coffeE．Based on the passage, it seems that the purpose of the cafe is to________A．gaining a lot of experience
B．making a lot of money
C．having a lot of trouble
D．learning a lot of knowledge
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