Green is an important color in nature. It is the color of grass and the leaves on trees. It is also the color of most growing plants.

Sometimes, the word “green” means young, fresh and growing. For example, a greenhorn is someone who has no experience. In the 15th century, a greenhorn was a young cow or an ox whose horns(角)had not yet developed. A century later, a greenhorn was a soldier who had no experience in war. By the 18th century, a greenhorn had the meaning it has today—a person who is new in a job. 

Someone who is good at growing plants is said to have a green thumb(大拇指). The expression comes from the early 20th century. A person with a green thumb can make plants grow quickly and well. The Green Revolution(绿色革命) is the name given some years ago to the development of new kinds of rice and other grains. It was the result of hard work by agricultural scientists who had green thumbs.

Green is also the color used to describe the powerful feeling, jealousy(嫉妒). The green eyed monster is not a dangerous animal from outer space. It is an expression used about 400 years ago by the British writer William Shakespeare in his play “Othello”. It describes the unpleasant feeling when someone has something he wants.

In most places in the world, a green light is a signal(信号) to move ahead. In everyday speech, a green light means approval(赞成) to continue with a project. 

1.A new solider was called a greenhorn in the ____ century.

A 15th

B 16th

C 18th

D 20th

解析：选B。选B。细节理解题。根据文章第二段第三、四句“In the 15th century,… .A century later, a greenhorn was a soldier who had no experience in war.”可知,新兵被称为greenhorn是在16世纪。故选B。

2.A person with a green thumb____.

A is good at growing plants

B really has a green thumb

C has no experience in war

D is new in a job

解析：选A。选A。推理判断题。根据第三段第一句“Someone who is good at growing plants is said to have a green thumb.”擅长种植物的人据说拥有 “green thumb”,可推断出，拥有 “green thumb”的人擅长于种植物，故选A。

3.A man may meet the green-eyed monster if ____.

A he sees a dangerous animal

B he can’t get something

C he reads a sad play

D his friend gets a prize that he wants

解析：选D。选D。推理判断题。根据倒数第二段的主题句“Green is also the color used to describe the powerful feeling.”绿色是用来形容强大感觉的颜色。“It describes the unpleasant feeling when someone has something he wants.”这个颜色用来形容当人们得到他们想要的东西时的感受。可推断出，形容一个人得到了他想要的奖品的时候就可以说，他遇到了绿眼睛的怪物。故选D。

4. This passage doesn’t mention the history of the expression “____”.

A a green

B a greenhorn

C the green-eyed monster

D a green light

解析：选D。选D。细节理解题。通读全文， “a green light”没有说它的历史起源，只是说了这个词在全球的广泛应用。故选D。

5.Which would be the best title of the passage?

A Green, the color of grass and trees

B The stories about the color “green”

C Green, a sign of approval

D Different meanings of “green”

解析：选D。选D。主旨大意题。本文介绍了green 及其搭配的不同含义，故选D。