Tips for Dealing with Seasonal Affective Disorder Seasonal affective disorder （SAD） is a type of depression that sets in or starts in the winter months.Unlike other types of depression，it may improve as spring comes on.It is often a periodic recurring disorder—you'll feel depressed every winter and begin to feel better each spring.SAD depression is caused by lowered levels of serotonin （血清素），the mood-affecting brain chemical that is caused by seasonal changes in daylight.Shorter days may also disrupt the body's biological clock，which upsets the balance of melatonin （褪黑激素），the hormone which regulates mood and sleep patterns.
    Seasonal affective disorder is far more common in northern climates，where days can be very short in winter.SAD affects more women than men and is more likely to occur in people under age 40 than those older than that.
    Although any amount of outdoor light can help raise serotonin levels，getting light in the morning seems to offer the most benefit.If the weather permits，take a walk.In your home or office，try sitting close to a window that faces south.Replacing light bulbs in your home with full spectrum light bulbs can help because they give out light similar to sunlight.
    Studies have shown that increasing your exercise routine can counteract SAD.Exercise raises levels of serotonin.Moderate exercise，which means neither too much nor too little exercise，such as walking，riding a stationary bike or swimming is a great way to get started.But any activities that raise your heart rate，including daily chores，can help，especially if you can do them outdoors or near a sunny window.Yoga，jogging and Tai chi can all help lift your mood.
    Year-end panic refers to the self-blame and overall feeling of panic brought about by the approach of the year's end，often due to a poor financial year and pressure from work and family.Psychological experts suggest that we should avoid peer competition.While regretting for the failed plans in the past year，you can still make resolution to do it better in the coming year.

（1）According to the passage，what is SAD？

It is Seasonal affective disorder/It is a type of depression that sets in or starts in the winter months./It is a type of depression that sets in or starts in the winter months，and may improve as spring comes on.

It is Seasonal affective disorder/It is a type of depression that sets in or starts in the winter months./It is a type of depression that sets in or starts in the winter months，and may improve as spring comes on.

（2）Who are more likely to suffer from SAD？

Increasing exercise routine can fight against SAD，and people should do a large amount of exercise to get started.According to the passage，moderate exercise is a great way to get started.So people shouldn't do too much exercise in the beginning.

Increasing exercise routine can fight against SAD，and people should do a large amount of exercise to get started.According to the passage，moderate exercise is a great way to get started.So people shouldn't do too much exercise in the beginning.

（3）Please decide which part of the following statement is false，then underline it and explain why.
? Increasing exercise routine can fight against SAD，and people should do a large amount of exercise to get started.

Women and people under age 40./SAD affects more women than men and is more likely to occur in people under age 40 than those older than that./People with lowered levels of serotonin.

Women and people under age 40./SAD affects more women than men and is more likely to occur in people under age 40 than those older than that./People with lowered levels of serotonin.

（4）Seasons bring not only depression but also happiness.Which season can cheer you up？And why？ （In about 40 words）

Spring can cheer me up because it's neither too cold nor too hot.First，spring can relieve the bleak feeling of winter.Besides，spring gives people a hopeful sense of recovery.Finally，There are many flowers that bloom in spring，which are very beautiful.

Spring can cheer me up because it's neither too cold nor too hot.First，spring can relieve the bleak feeling of winter.Besides，spring gives people a hopeful sense of recovery.Finally，There are many flowers that bloom in spring，which are very beautiful.