题目内容：

    It is reported rhino horns are big business. Traditional Chinese medicine uses them to treat illnesses. A kilogram can be sold as much as horn $60,000.As a result, almost all rhino populations are in danger. In order to solve the serious problems, a good way to relieve pressure on the animals might be to fill the market with fakes(仿造品),so rhinos may have a chance to stay alive.

That would need the fakes to be good. But Fritz Vollrath, a zoologist at Oxford University and his partners from Fudan University have come up with a cheap and easy-to-make fake horn that is very similar to the real thing.

The main material of Dr. Vollrath's fake horn is horsehair. Although horses and rhinos look different, they are closely related. Horses do not have horns, of course, but neither do rhinos. The "horns" of rhinos are not made of bones but hairs. The hairs are tied tightly together by a mixture of dead cells. Examinations under a microscope showed that hairs from horses' tails are similar to those in the horns of rhinos.

So how can a fake rhino horn be made? First, find out the right materials. Second, a proper glue should be used. Dr. Vollrath and his partners get a special kind of glue. It is naturally produced by spiders and silkworms. Third, the glued horn is put in an oven to dry. At last, after some polishing, the fake horn looks just like a real one.

DNA would certainly tell the fakes but people's eyes are not able to tell the differences. So by making fake horns, people may help save more rhinos.

1.Rhino populations are in danger because____________.

A.they become seriously ill B.rhinos have a lot of pressure

C.fake rhino horns may fool people D.rhino horns can be sold at a good price

2.The Chinese meaning of "relieve” in Paragraph 1 is____________.

A.缓和 B.重复 C.加剧 D.消灭

3.The underlined word "those" in Paragraph 3 refers to_

A.tails B.horses C.hairs D.examinations

4.There are ____________steps to make a fake rhino horn according to the passage.

A.three B.four C.five D.six

5.The writer's opinion about the fake rhino horns is that

A.people have to make fake rhino horns to save rhinos.

B.it's expensive and difficult to make the fake rhino horns.

C.people make the fake rhino horns to make lots of money.

D.the fake rhino horns are completely the same as the real ones.