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【简答题】
In the past few years, research has suggested that Vitamin D may increase the level of serotonin（血清素）, one of the key nurotransmitters influencing our mood, and ________it helps to relieve mood disorders. A．that B．where C．what D．which
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参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】Factors for Stress and Anxiety At some point in their lives virtually everyone will experience stressful events or situations that overwhelm their natural coping mechanisms. In one poll, 89% of respo...
A.
have an aggressive and anti-social mother
B.
fail to build a sound relationship with pals
C.
get into a new school environment
D.
fail to pass an important school test
【单选题】Depression isn't just feeling down．It's a real illness with real causes．Depression can be set off by stressful life events, like divorce or a death in the family or it can appear suddenly, for no appa...
A.
a mental state that can be overcome without medicine
B.
an illness that no medicine can cure
C.
an experience everyone has in his life time
D.
something you can avoid by leading a happy life
【单选题】Factors for Stress and Anxiety At some point in their lives virtually everyone will experience stressful events or situations that overwhelm their natural coping mechanisms. In one poll, 89% of respo...
A.
two persons with different characteristics work together
B.
a person always recalls past painful experience
C.
a person has just get over a serious physical disease
D.
parents abuse their children too much in early nurturing
【单选题】Factors for Stress and Anxiety At some point in their lives virtually everyone will experience stressful events or situations that overwhelm their natural coping mechanisms. In one poll, 89% of respo...
A.
Harassment.
B.
Violence.
C.
Heart burden.
D.
Karoushi.