英语口语培训学校,为何你的新年决心总泡汤由刀豆文库小编整理，希望给你工作、学习、生活带来方便”。
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英语口语培训学校，为何你的新年决心总泡汤
Uh-oh, the new year's just begun and already you're finding it hard to keep those resolutions to junk the junk food, get off the couch or kick smoking.There's a biological reason a lot of our bad habits are so hard to break – they get wired into our brains。
That's not an excuse to give up.Understanding how unhealthy behaviors become ingrained has scientists learning some tricks that may help good habits replace the bad。
“Why are bad habits stronger? You're fighting against the power of an immediate reward,” says Dr.Nora Volkow, director of the National Institute on Drug Abuse and an authority on the brain's pleasure pathway。
“We all as creatures are hard-wired that way, to give greater value to an immediate reward as opposed to something that's delayed,” Volkow says。
Just how that bit of happine turns into a habit involves a pleasure-sensing chemical named dopamine.It conditions the brain to want that reward again and again – reinforcing the connection each time – especially when it gets the right cue from your environment。
People tend to overestimate their ability to resist temptations around them, thus undermining attempts to shed bad habits, says experimental psychologist Loran Nordgren, an aistant profeor at Northwestern University's Kellogg School of Management。
Even scientists who recognize it can fall prey。
“I don't like popcorn.But every time I go to the cinema, I have to eat it,” Volkow says.“It's fascinating.”
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A movement to pay people for behavior changes may exploit that connection, as some companies offer employees outright payments or insurance rebates for adopting better habits。
However paying for behavior plays out, researchers say there are some steps that may help counter your brain's hold on bad habits:
Repeat, repeat, repeat the new behavior – the same routine at the same time of day.Resolved to exercise? Doing it at the same time of the morning, rather than fitting it in haphazardly, makes the striatum recognize the habit so eventually, “if you don't do it, you feel awful,” says Volkow the neuroscientist, who's also a paionate runner。
Exercise itself raises dopamine levels, so eventually your brain will get a feel-good hit even if your muscles protest。
Reward yourself with something you really desire, Volkow strees.You exercised all week? Stuck to your diet? Buy a book, a great pair of jeans, or try a fancy restaurant-safer perhaps than a box of cookies because the price inhibits the quantity。
1．表示过去某个特定时间或某一段时间发生的动作或情况。
We visited the school last spring.I went to school by bike when I was in middle school.China was founded in 1949.2．在表示时间或条件等的状语从句中代替过去将来时。（参）
She told me that she would not go with us if it rained the next day.They would not leave until she came back.My friend promised to marry me once she made her final decision.登陆网站 参加免费试学www.daodoc.com
3．一般过去时，现在时和过去时的几组差异：（别以为这很简单，下面的差异你不一定明白。）
● Her brother was a chemist.（已去世）
● Her brother is a chemist.（尚健在）
● That's all I had to say.（话已说完）
● That's all I have to say.（言之未尽）
● It was so nice to see you.（离别时用）
● It is so nice to see you.（见面时用）
● Jane did a lot of work this morning.（已是当天下午或晚上）
● Jane has done a lot of work this morning.（仍是上午）［本句现在完成时，此乃后话！］
测试精编 I：（用所给动词的正确进态填空）。
1.Yesterday I ________(think)that you were not in Beijing.2.Alice usually ________(sit)in the front of the claroom, but she ________(sit)at the back this morning.3.He ________(tell)the news to us three days ago.4.He________(begin)to teach Chinese in 1990.5.she would not telephone me if she ________(have)no time.测试精编 II：
1.They ________ the trip until the rain stopped.登陆网站 参加免费试学www.daodoc.com
A.continued B.didn't continue
C.hadn't continued D.would continue
2.The local peasants gave the soldiers clothes and food without which they ________ of hunger and cold.（without 在这里表条件，你知道吗？）
A.would die B.will die C.would be dead D.would have died
3.It was not until then that I came to know that the earth ________ around the sun.A.moved B.has moved C.will move D.moves
4.When all those present（到场者）________ he began his lecture.（重点题）
A.sit B.set C.seated D.were seated
5.If I had had time, I would have written to you.But in fact I ________ not.A.have B.would have C.had D.had had
