“ Tiger Mother” in America is commonly regarded as the fact that the Chinese education is going to （).

Many people believe that cloning represents man’s attempt to “play God” and want to see it banneD.There are also many people who say that cloning research involving other animals should be banned as well. One scientist who doesn’t go along with this point of view is Michael Archer, who supports a proposed project to try to bring back the Tasmanian tiger that no longer exists. He believes people kill off all of the Tasmanian tigers, but through cloning the mistake could be corrected.Before the 1800s, this animal could be found all across AustraliA.But when settlers from Europe came to Australia, they found that Australia was a very good place to raise sheep. Unfortunately, many of these sheep were killed by Tasmanian tigers, so people began to hunt the tigers. In 1936, the last known Tasmanian tiger died in a zoo in TasmaniA.Since then, no evidence of any living Tasmanian tigers in the wild has been found.The only currently living cloned animals came from experiments on living species. In these experiments, the eggs that grew into the cloned animals developed inside host mother of that same species. But since there are no living female Tasmanian tigers to act as mothers, a different species would need to act as the host mother. Researchers need to learn a lot more about the possibilities of this process before any extinct species can be cloned.A surprising discovery was made in 2001. A jar containing a preserved baby Tasmanian tiger was found in the Australian Museum. The jar had been sitting in the museum since 1866! Luckily, it had been preserved in alcohol rather than another kind of preservative. The alcohol did not destroy its DNA, so that gave researchers the idea to try to use its genes to clone a Tasmanian tiger. There was a breakthrough in 2002 when scientists managed to make duplicates of sample genes from that baby tiger – the first step toward reproducing the full DNA of the animal.“What Professor Michale Archer and his team are attempting is as scientifically exciting and technically challenging as splitting the atom or landing a man on the moon,” said Maurice Paleau, the producer of a television documentary on the cloning efforts.

16)What is the main purpose of the passage？

A.It is to argue against cloning research.

B.It is to contrast cloning laws in different countries.

C.It is to explain a specific cloning project.

D.It is to present the history of cloning research.

17)Why are researchers interested in cloning the Tasmanian tiger？

A.They want to bring the species back to life.

B.The tiger is useful for controlling sheep populations.

C.The tiger’s fur is valuable for trade.

D.There are only a few Tasmanian tigers alive today.

18)What caused most of the Tasmanian tigers die？

A.A disease that was infected in TasmaniA.

B.A larger group of sheep in AustraliA.

C.Humans who hunted the Tasmanian tigers.

D.Research on Tasmanian tigers.

19)How is it possible to clone the Tasmanian tiger？

A.It is by catching one of the few animals left in the wilD.

B.It is by changing the law to protect them.

C.It is by having a female Tasmanian tiger act a host mother.

D.It is by using cells from a dead Tasmanian tiger.

20)Which of the following can be assumed from the reading？

A.It is very close to creating the first cloned Tasmanian tiger.

B.People in Australia will create a large zoo.

C.The cloning laws in Australia are very strict.

D.The government supports the research on Tasmanian tiger.