Am I choose right?

These two days i seem busy a lot of things but just realise end up in nonthing.
Wei Jie told me his job is lack one person and want me take the place for two weeks.
Its ok just for two week , i think...
but when come to interview,the agen told me i must sign contract at least two month...
OMG...
just a little bit lost...
i just want too learn something and earn some when i know this job
but its only waste my time if i spent my time in this work for two month although the salary is so entice
and the job is most like a dietetics not suitable for bio medical studient...
lastly,i refuse job...
but,i dont know it a good choice for me or not....