根据以下内容回答题： Why do you like someone?That person may not be great looking if you take a poll，but someone falls（1）him／her immediately．Why do this happen?What is the chemistry?Why do you find someone attractive?What is the（2）of that?Many love stories have been written around the love at first sight．The prince saw the princess and the princess saw the prince．Both（3）in love with each other forever．This is what romance is made（4）． What is this and how does this happen?You manage to lose your（5）；your thinking ability and your head．Your heart con-trols everythin9．You try every way possible to meet and win over that person．You pass sleep-less nights（6）of him／her．You are not able to live without that person for a moment.Much has been written about romantic love．No one has（7）any conclusion about how such love devclops．There are different theories about it，but can love be ever defined in terms of chemicals?Ultimately what will science achieve by（8）about how and why of such ro-mantic love that is heavenly?The best thing if you fall in（9）love is to preserve it carefully．（10）no circumstances，let anything happen to destroy it．It is very precious．Take care of it． 1.