Confidence is very important in daily life．It can help you develop a healthy attitude．A study shows that the people who are more confident are much happier____But how to be more confident？Here are some suggestions：

    Speak loud

    When you are not confident，you can't do well what you want to do____Try to speak loud enough so that people can hear you clearly．The high voice can help you become more confident．

    Play sport

    Physical exercise makes you tired but completely relaxed．A strong body helps you be full of confident．

    Encourage yourself

    Write down a list of things you did during the day to see how many things you have done well．Did you finish your task on time？Did you help your family with the housework？____

    Get rid of fear

    Fear comes along with failure____Don't hide your head just because you said something stupid last time．Try to start again and believe you can do better．

    Pick up a hobby

    ____  In some ways，a hobby can make you outstanding．And it will make you happy and confident．

A．You speak in such a low voice that other people can hardly hear you．

B．If you like singing，sing as much as you can．

C．But it's easy to overcome if you know that failure is part of your life．

D．They can have more chance to make themselves successful．

E．Give yourself praise of the good things you've done．

孟德尔对遗传定律的探索经过了（ ）

阅读下列材料：

材料一

材料二  (洪武)十五年(1382年)仿宋制，置华盖殿、武英殿、文渊阁、东阁诸大学士，又置文华殿大学士，以辅导太子。秩皆正五品。……大学士特侍左右，备顾问而已。

——《明史》卷七十二

材料三  凡京奏，禁中称文书，必发阁臣票拟。阁票用本纸、小帖、墨字，内照票拟，或皇上御笔，或宦官代书，具即在文书上面用朱字。阁票如有未合上意，上加笔削或发下改票，阁臣随即封上，间有执正强争，也多曲折。

——叶凤毛《内阁小识》

材料四  “光荣革命”以后，英国国王经常召集重要大臣一起开会，以征求他们对一些政治问题的意见。当时，因为这种会议在一个小房间中举行，所以人们就称这个会议为内阁会议。不过在1714年以前，内阁还不是一个法定的组织，它只是少数大臣参加的会议。此后，国王从没有否决内阁的决议，于是有的重要大臣就出来主持会议，并把内阁的意见集中起来，向国王汇报，这样，他的地位日益重要和突出，慢慢成为后来人们所称的首相。内阁制就这样逐渐形成并完善起来。

——《世界史资料丛刊》

请回答：

P={α|α=（﹣1，1）+m（1，2），m∈R}，Q={β|β=（1，﹣2）+n（2，3），n∈R}是两个向量集合，则P∩Q等于（　　）