A new kind of walk is very popular now. It is called ColorWalk. Many young people like it. It helps them feel relaxed and happy.

The idea is easy. First, choose a color. Then go out for a walk. Look for things of that color. The walk is a nice trip for your heart and health.

Doctors have good advice. When you feel worried, try green or blue. When you feel sad, try yellow or orange.

Just walk and enjoy the beauty around you. Twenty minutes of ColorWalk can make you feel good.

1.1. Who likes ColorWalk?

A Old people.

B Young people.

C Teachers.

D Farmers.

解析：选B。B细节理解题。第一段第三句“Many young people like it.”，说明年轻人喜欢ColorWalk。故选B。

2.2. What is the first thing to do for a ColorWalk?

A Run fast.

B Draw a picture.

C Sing a song.

D Choose a color.

解析：选D。D细节理解题。第二段第二句“First, choose a color.”，说明进行ColorWalk前首先要选定一种颜色。故选D。

3.3. What color helps when you feel sad?

A Green.

B Blue.

C Yellow.

D Black.

解析：选C。C细节理解题。第三段最后一句“When you feel sad, try yellow or orange.”，说明难过的时候可以选黄色或橘色。故选C。

4.4. How long should you walk to feel good?

A 10 minutes.

B 20 minutes.

C 30 minutes.

D 40 minutes.

解析：选B。B细节理解题。第四段第二句“Twenty minutes of ColorWalk can make you feel good.”，说明20分钟的ColorWalk能让你感觉变好。故选B。