已知变量x与y正相关，且由观测数据算得样本平均数 $\stackrel{-}{x}$ =3， $\stackrel{-}{y}$ =3.5，则由该观测数据算得的线性回归方程可能是（   ）

Bury trip﹣﹣June 18th，2016

    We will be leaving the Perse School at 13：45．Please be at the school gate 10minutes early．If you are late，you may miss the bus and not be able to go! If you miss the bus，you won't get your money back．The bus is planned to arrive in Bury at 14：30，although this depends on traffic．You will have free time to walk around and we will meet at the same location where we arrived at 17：15to return to the Perse School by about 18：00．

    Things to do Visit the Abbey

    The Abbey is the min （废墟）of a church which was built more than 1，000years ago．There are many nice gardens in it．And next to the Abbey，there is a big new church．

    Have a drink in the Nutshell

    This little bar is famous in Britain because it is officially （正式地）the smallest bar in the country．Good things are put in small bags，and the Nutshell serves some of the area's finest beer，as well as fascinating photos．

    Have a look at a beer shop

    At the Greene King shop you can taste and buy some of the local beer，as well as food such as potato chips．There are also clothes available to buy．

    Several places are listed，but feel free to plan your own visit．

当消费者的合法权益受到侵害时，消费者可以（    ）
①向公安机关申诉                        ②向当地消费者协会投诉
③与经营者协商解决                     ④向人民法院提起诉讼