63.The writer offered 　　　　examples to support his argument.　

A.4　　　　　　 B.5　　　　　　 C.6　　　　　　 D.3

62.From the passage we know that 　　　.　

A.Kraemer and his team have succeeded in cloning a dog　

B.scientists try to implant a panda’s egg into a rabbit　

C.Kraemer will work with Chinese scientists in clone researches　

D.about two thousand of species will probably die out in a century

C

The common cold is the world’s most widespread illness,which is plagues (疫病)that flesh receives.

The most widespread fallacy(谬误)of all is that colds caused by cold.They are not.They are caused by viruses(病毒)passing on from person to person.You catch a cold by coming into contact,directly or indirectly,with someone who already has one.It cold causes colds,it would be reasonable to expect the Eskimos to suffer from them forever.But they do not.And in isolated arctic regions explorers have reported being free from colds until coming into contact again with infected people from the outside world by way of packages and mail dropped from airplanes.

During the First World War soldiers who spent long periods in the trenches (战壕),cold and wet,showed no increased tendency to catch colds.

In the Second World War prisoners at the notorious Auschwitz concentration camp(奥斯维辛集中营),naked and starving,were astonished to find that they seldom had colds.

At the Common Cold Research Unit in England,volunteers took part in Experiments in which they gave themselves to the discomforts of being cold and wet for long stretches of time.After taking hot baths,they put on bathing suits,allowed themselves to be with cold water,and then stood about dripping wet in drafty room.Some wore wet socks all day while others exercised in the rain until close to exhaustion.Not one of the volunteers came down with a cold unless a cold virus was actually dropped in his nose.

If,then,cold and wet have nothing to do with catching colds,why are they more frequent in the winter?Despite the most pains-taking research,no one has yet found the answer.One explanation offered by scientists is that people tend to stay together indoors more in cold weather than at other times,and this makes it easier for cold viruses to be passed on.

No one has yet found a cure for the cold.There are drugs and pain suppressors(止痛片)such as aspirin,but all they do is to relieve the symptoms(症状).　

61.The best title for the passage may be 　　　.　

a’s Success in Pandas Cloning　

B.The First Cloned Panda in the World　

C.Exploring the Possibility to Clone Pandas　

a-the Native Place of Pandas Forever

60.According to Professor Kraemer,the major problem in cloning pandas would be the lack to 　　　　.　

A.available panda eggs　 B.host animals　 C.qualified researchers　 D.enough money　

59.The aim of “Noah’s Ark”project is to 　　　.　

A.make efforts to clone the endangered pandas　

B.save endangered animals from dying out　

C.collect DNA of endangered animals to study　

D.transfer the nuclear of one animal to another

58.The notice tells us that 　　　.　

A.something unpleasant could happen to you if you use a camera during the seminar　

B.ladies must not wear handbag or any jewellery　

C.in the hotels of Nairobe,it might be dangerous to stay in a single room　

D.everything will be OK if you always watch out and are clear about the surroundings

B

With only about 1,000 pandas left in the world,China is desperately trying to clone (克隆)the animal and save the endangered species(物种).That’s a move similar to what a Texas A & M University researchers have been undertaking for the past five years in a project called “Noah’s Ark.”

　　 Noah’s Ark is aimed at collecting eggs,embryos(胚胎),semen and DNA of endangered animals and storing them in liquid nitrogen.If certain species should become extinct,Dr.Duane Kraemer,a professor in Texas A & M’ s College of Veterinary Medicine,says there would be enough of the basic building blocks to reintroduce the species in the future.

It is estimated that as many as 2,000 species of mammals,birds reptiles will become extinct in over 100 years.The panda,native only to China,is in danger of becoming extinct in the next 25 years.

This week,Chinese scientists said they grew an embryo by introducing cells from a dead female panda into the egg cells of a Japanese white rabbit.They are now trying to implant the embryo into a host animal.

The entire procedure could take from three to five years to complete.

“The nuclear transfer(核子移植)of one species to another is not easy,and the lack of available (capable of being used) panda eggs could be a major problem,”Kraemer believes.“They will probably have to do several hundred transfers to result in one pregnancy (having a baby).It takes a long time and it’s difficult,but this could be groundbreaking science if it works.They are certainly not putting any live pandas at risk,so it is worth the effort,”adds Kraemer,who it one of the leaders of the Project at Texas A & M,the first-ever attempt at cloning a dog.

“They are trying to do something that’s never been done,and this is very similar to our work in Noah’s Ark.We’re both trying to save animals that face extinciton.I certainly appreciate their effort and there’s a lot we can learn form what they are attempting to do.It’s a research that is very much needed.”　

57.After reading this notice,visitors to Nairobe might gain an impression that 　　　.　

A.Fred Okono and his fellow workmates are very kind and helpful　

B.Nairobe is a large city which is very developed　

C.the crime problem is very serious in the city of Nairobe　

D.they should not have paid a visit to Nairobe,and should buy a ticket back immediately

56.This selection must be delivered by 　　　.　

A.the Nairobe city government　　　　　　　 B.the police of the Nairobe Airport　

C.the organizer of the seminar　　　　　　　　 D.Kennedy Hongo,a detective

8.Finally,the best defence is to be alert at all times and conscious of your environment.

Should you have any problem,query or need help at any hour of the day or night call any of the following and they will do their best for you:　

7.Stay with the main party all the time,and avoid wandering off on your own.