1 . There are many therapies (疗法) for depression, including medical treatment, psychotherapy and talk therapy. Having a range of treatment choices is a good idea because no single treatment works equally well for each of millions of sufferers. Choosing the most suitable treatment is important to them. Now researchers say a new therapy proven to relieve depression should be added to the established treatments. It's called nature therapy. "Interacting with nature can have positive effects on those with depression," says Ethan Kross, PhD, an expert who has studied the nature depression link.

A little exposure to nature helps all of us get our energy back, and it may have special benefit for those who are depressed.“It seems that, from our work, the restorative effect of nature seems to be stronger for individuals with depression," says Marc Berman, PhD, an assistant professor of psychology at the University of Chicago. That might be because they feel mentally exhausted, and being in nature re energizes them. However, Dr Berman has a strong warning. “We're not arguing that interacting with nature should replace clinically proven treatments for depression," he says, “Nor should those with clinical depression try to treat themselves.”

However, Berman and others say, interactions with nature could serve as a very effective supplementary treatment. Compared to adults with depression walking for 50 minutes in an urban setting, those who took a 50 minute walk in a natural setting were less depressed and had better memory skills.

Why does nature hold this special effect? Berman says, “In a natural environment, we can choose to think or not, and this choice is believed to help us rest our brains. You can then pay attention later, when you need to.”He adds, “It gives people more ability to concentrate, which is a big problem for those with depression. ”Nature provides an effective setting for resting our brains, unlike urban setting. Even in the most peaceful urban environment, you have to pay attention to such things as traffic and stoplights.

1. What can we learn about depression therapies from paragraph 1?

A．They focus on physical activity.

B．They pay no attention to interactions.

C．They mainly depend on natural environment.

D．They need to be tailored to different patients.

2. How does nature benefit patients with depression?

A．By making them feel energetic.	B．By reminding them to rest in time.
C．By taking the place of clinic treatment.	D．By covering up their mental problems.

3. What does the underlined word “supplementary" in paragraph 3 probably mean?

A．Additional.

B．Traditional.

C．Controversial.

D．Essential.

4. What is the text mainly about?

A．An urban setting of restoring energy.

B．The positive role of nature in treating depression.

C．The popularity of using multiple ways to treat diseases.

D．An effective replacement of clinical therapy for depression.