question about fl=score

[李银松]

1、When I set fl=score ,solr returns just as fl=*,score ,not just scores
Is it a bug or just do it on purpose?
2、I'm using solrj to get about 10000 docs' score in LAN. It costs me about
10+ seconds first time(QTime is less than 100ms) , but 1-2 seconds second
time with the same querystring. It seems a bit too long for the first
time(total size of the doc to transport is about 500k). Is there anything i
can do with it?