2015-2016学年北师大版必修2Unit6DesignLesson3ChinesePaperArt第4课时学案.docVIP

2015-2016学年北师大版必修2Unit6DesignLesson3ChinesePaperArt第4课时学案.doc

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2015-2016学年 HYPERLINK javascript:; \o 北师大版 北师大版  HYPERLINK javascript:; \o 选修7 必修2  HYPERLINK javascript:; \o Unit 19 Language Unit 6 Design  HYPERLINK javascript:; \o Lesson 1 Language Learning B Lesson 3  Chinese Paper Art第4课时 学案 Ⅰ.阅读理解 阅读下列短文,从每题所给的四个选项(A、B、C、D)中,选出最佳选项。 A Long nights of winter can leave even the most positive people feeling cranky (古怪的).But for about 5% of Americans,its more serious: seasonal affective disorder (SAD) is a type of depression that most occurs in the winter. Symptoms include loss of energy,eating more and difficulty in concentrating. The cause of SAD is unknown,but darker days probably play a role. Reduced levels of natural sunlight can disrupt your bodys internal clock,which can lead to depression.It also causes a drop in serotonin (血清素),a feel-good brain chemical. Severe cases may need antidepressant treatment.You cant prevent the disorder from developing,but you can ease the symptoms. Consider light therapy Exposure to bright light that mimics (模仿) natural light is thought to affect mood-related brain chemicals and ease symptoms. It involves sitting in front of a special light box or wearing a cap-like lighted visor(盔甲),for about 30 minutes a day.Another therapy uses a “dawn simulator” that is turned on early in the morning and gradually increases in brightness,allowing your body to wake up naturally. Light therapy can have minor side effects,such as eye strain and headaches,and it isnt recommended for people with skin sensitivity. Go outside Yes,even if its cold and cloudy.Natural light is still good for you,and it can relieve your symptoms,especially if you head outdoors within two hours of waking up.At home,open the blinds and drapes to let in the light. Eat right and exercise Two health basics can help here,too.A well-balanced diet can improve energy levels,and regular physical activity works to boost your mood and ease stress and anxiety which can aggravate SAD symptoms. Spend time with friends Make an effort

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