题目内容：

When the sun sets in Hong Kong, the city skyline comes alive. Billboard（广告牌）lights flash, and light up the crowded streets. The colorful lights from the tall buildings are one of the city’s main attractions.

“Oh, my god. The lights are so amazing. We love it. It’s so nice.” said one visitor.

But this appreciation is not shared by everyone in Hong Kong. Lat year then government reported a record number of complaints. The curtains may be drawn. But residents argue the bright light outside is hard to escape. “We receive some complaints about the light pollution. They find it very hard to sleep or they have disturbance from the light outside.”

Scientists at the University of Hong Kong spent 18 months studying levels of light pollution and collecting more than 5 million measurements. They found Hong Kong one of the world’s worst “victims”. The lights pollution condition in Hong Kong was extremely severe. Particular in cities, the night sky brightness, as well as the lights, is a few hundred times over the level of that of a night sky without light pollution. In cities such as Seoul, London, Shanghai and Paris, billboard lighting is under control. And there are punishments for people who go against the law.

But in Hong Kong, there are no laws. A volunteer regulation called Charter of External Light（户外灯光约章）encourages visitors to switch off between 11 p.m. and 7 p.m. The critics say it’s not enough to make a difference. The government says 4800 businessmen have signed up to the Charter so far. And it’s satisfied that it’s working.

But not everyone is convinced and some residents are taking upon themselves to act. Zoe Chow led a campaign to have a commercial building switch off their midnight. She won but she believes the lights will eventually turn back on. “I know that the building has signed the Charter of External Light. But it is voluntary, not mandatory（强制的）.

1.What is the complaint about in the third paragraph?

A. The ill-designed billboard.

B. The unattractive night lights.

C. The light pollution at night.

D. The city noise and disturbance.

2.Which of the following statements is True according to the passage?

A. Billboard lighting is under control in all big cities.

B. Scientists have found ways to stop the light pollution.

C. The government attaches little importance to the light pollution.

D. The Charter of External Light is aimed to help reduce the light pollution.

3.What can we infer from the last paragraph?

A. Bright lights in Hong Kong may continue to shine.

B. People are satisfied with the role the Charter plays.

C. Residents will never start a campaign against the light pollution.

D. The Charter of External Light will no longer have an effect.

4.What is this text mainly about?

A. Hongkong’s light pollution law.

B. Severe light pollution in Hongkong.

C. Pollution problems in big cities.

D. The Solution to light pollutions.