①conn = sqlite3.connect("test.db")
②cur = conn.cursor()
③import sqlite3
④conn.close()
⑤cur.close()
⑥cur.execute("INSERT INTO colldata(Noid,collData,collTimer) VALUES(%d,%f,'%s')" % (collid, colldata, nowtime))
若要实现上述功能,则上述语句执行的先后顺序是( )