题目内容：

    Who would win in a fight, a lion or a tiger? Well, if size has anything to do with the matter, the tiger would win. That’s because tigers are the largest of all cat species. 1. They can dash as fast as 40 miles per hour for short distances and leap as far as 30 feet. You may not think that such large, fast, and fierce tigers need help to survive, but they do.

At the start of the 20th century, there were over 100,000 tigers living in the wild. By the turn of the century, the number of tigers outside of catch decreased to just over 3,000. Interestingly, the most serious threats that tigers face come from a much smaller species, one with an average weight of around 140 lbs. That species is Homo sapiens, better known as humans. 2.

3. People have long valued the famous striped(有条纹的) skins. Though trading tiger skins is now illegal in most parts of the world, tiger fur are worth around $10,000 on the black market. Though the fur would be incentive(刺激) enough for most hunters, other parts of the tiger can also fetch a pretty penny. Some people in China and other Asian cultures believe that various tiger parts have cure function. Traditional Chinese medicine calls for the use of tiger bones, among other parts, to cure some disease.

4. In other words, people hunted tigers only for the thrill and achievement of killing them. Such killings took place in large scale during the 19th and early 20th centuries, when an English hunter might demand to kill over a hundred tigers in their hunting career. Though this practice is much less popular today than it was in the past, it has not stopped entirely.

Humans have done great damage to the world’s tiger population through hunting, but perhaps more damage has been caused through the destruction of habitat. Tigers once ranged widely across Asia, all the way from Turkey to the eastern coast of Russia. But over the past 100 years, tigers have lost 93% of their historic range. The tiger population is now isolated in small pockets in southern and southeastern Asia. 5.Humans have built towns and cities. Road and transport systems were created to connect these towns and cities. To feed the people living in these areas, forests and fields have been cleared to create farmland. A major difficulty to preserving tigers is the large amount of territory(领土,领域) that each tiger requires. Each wild tiger demands between 200 and 300 square miles. Because tigers need so much territory, it is really difficult to acquire enough land to support a large population of tigers.

A.A lion is not as large as a tiger but runs faster than it.

B.This is because humans have heavily changed the environments.

C.Tigers have also been hunted as game.

D.Tigers are hunted for many reasons.

E.Tigers are not only large, they are also fast.

F.Humans threaten tigers in primarily two ways: hunting and destroying habitat.

G.Though humans have done great harm to tigers.