题目内容：

In London's art gallery six or seven men, mostly in their 30s, are busy painting the walls with new designs in colorful lettering and clever tricks. Tins of spray paint and beer stand on the ground. The atmosphere is not unlike that of a golf course: a mix of concentration and relaxation.

Graffiti(涂鸦) painting is traditionally a daring hobby. Teenagers avoid security guards to put their names on trains and buses. But over the past decade that has almost disappeared from Britain's cities. Between 2007 and 2017 the number of incidents of graffiti recorded by the British Transport Police fell by 63%. A survey by the environment ministry shows that fewer places are damaged by tags(绘名) than ever. Graffiti are increasingly limited to only a few walls. In time the practice may die out entirely.

The most obvious reason for the decline in tagging and train-painting is better policing, says Keegan Webb, who runs The London Vandal, a graffiti blog (博客). Numerous cameras mean it is harder to get away with painting illegally. And punishments are more severe. A generational change is apparent, too. Now teenagers prefer to play with iPads and video games. Those who do get involved tend to prefer street art to graffiti. And the internet helps painters win far more attention by posting pictures online than they can by breaking into a railway yard.

Taggers and graffiti artists mostly grew up in the 1980s and 1990s. Those men are now older and less willing to take risks. "We can't run away from the police any more," says Ben Eine, who turned from tagging to street art. The hip-hop culture that inspired graffiti in the first place has faded. Video games and comic books provide more inspiration than music.

Graffiti may eventually disappear. But for now the hobby is almost respectable. Mr Eine says he has lots of friends who used to paint trains. Now with wives and children, they paint abandoned houses at the weekend. It has become something to do on a Sunday afternoon—a slightly healthier alternative to sitting watching the football.

1.How do the painters feel while painting graffiti according to the first paragraph?

A. Free but stressed.    B. Free and focused.

C. Particular and respected.    D. Nervous but satisfied.

2.Why is graffiti painting traditionally considered as a daring hobby?

A. It's at the risk of being caught.

B. It takes much hard training.

C. It's dangerous to paint in trains.

D. It needs a great deal of knowledge.

3.hat does the underlined word “decline” in the third paragraph refer to?

A. Ban of government.    B. Reduction of graffiti.

C. Disappearance of graffiti.    D. Better policing of government.

4.What conclusion can we draw from the fourth paragraph?

A. The early graffiti had something to do with music.

B. Graffiti artists like to be the focuses in public.

C. Graffiti artists regret over what they did in the past.

D. Painting is much healthier than watching football.