题目内容：

    The term "dark tourism" is far newer than the practice, which long existed before Pompeii became a dark attraction. Dr. Philip Stone, perhaps the world’s leading expert on dark tourism, considers the Roman Colosseum as one of the first dark tourist sites, where people travelled long distances to watch death as sport. Later, until the late 18th century, the appeal was crueler still in central London, where people paid money to watch mass hangings. Pies would be sold at the site, which was where Marble Arch（大理石拱门）stands today.

It was only in 1996 that "dark tourism"entered the scholarly vocabulary when two professors in Glasgow applied it while looking at sites related to the murder of John F. Kennedy. Those who study dark tourism give plenty of reasons for the growing phenomenon（现象）, including raised awareness of it as a recognizable thing. Access to sites has also improved with the arrival of cheap air travel. It is hard to imagine that the Auschwitz-Birkenau memoir and museum would now welcome more than two million visitors a year without its nearness to Krakow’s international airport. Peter Hohenhaus, a widely travelled dark tourist based in Vienna, also points to the sharp rise in off-the-beaten-track tourism, beyond the territory of popular guidebooks. "A lot of people don't want mainstream（主流） tourism and that often means visiting places that have a more recent history than, say, a Roman ruin." he says. You go to Sarajevo and most people remember the war being in the news, so it feels closer to one’s own biography(传记).’

Hohenhaus is also a fan of "beauty in decay(腐朽)," the current cultural movement in which urban ruins have become subject matter for expensive coffee-table books and a thousand Instagram accounts. The combination with death is clear. "I have always been drawn to ruined thing," the 54-year-old says. But while, like any tourism, dark tourism at its best is educational, the example of Grenfell Tower( a London tower block, destroyed by a fire in 2017 with 71 deaths) suggests the unease felt at some sites. "I remember the Lonely Planet Bluelist book had a chapter about dark tourism a while ago and one of the rules was ‘don't go back to early."Hohenhaus says." I will be interested to see Grenfell Tower up close. I can see the attraction. But I would not stand in the street taking a selfie merrily."

1."Dark tourism"is tourism involving travelling to places ______________.

A.difficult to reach in ancient times

B.with a history before human civilization

C.historically related to death and sad events

D.famous for cruel but exciting sports in Europe

2.Which is one of the reasons for the development of dark tourism?

A.More scholars have begun to study it as a subject.

B.People have become rich enough to afford to travel around.

C.Lots of people are more satisfied with ordinary tourist destinations.

D.People have realized the significance of environmentally-friendly tourism.

3.The underlined word "unease" in Paragraph 3 implies that tourist may feel _____ at dark tourism sites.

A.uncomfortable B.relaxed

C.dissatisfied D.happy

4.Which of the following best serves as the tile of this passage?

A.Features of dark tourism B.Proper attitudes to dark tourism

C.List of dark tourism sites D.Growing popularity of dark tourism