Researchers are finding new ways to save snakebite victims.Experts discussed the latest findings during a recent conference.
Scientists in Australia have shown that a chemical called nitric oxide could increase the chances of surviving a poisonous snakebite.The scientists injected rats with a deadly amount of snake venom.Then they rubbed an ointment(软膏)containing nitric oxide on the skin around the injection site.The study found that the rats lived about one-third longer than if nitric oxide had not been used.But the treatment had to be started very quickly.
Dirk van Helden led the research.He says the nitric oxide ointment also showed promise in humans.The study appeared earlier this year in the journal Nature Medicine.Scientists say the findings could help save many lives.A recent study found that poisonous snakes cause as many as ninety-four thousand deaths worldwide each year.But Ulrich Kuch of the Biodiversity and Climate Research Center in Frankfurt,Germany,says that number appears to be low.
Mr Kuch says many deaths could be prohibited if snakebite victims are treated correctly,but they often go to traditional healers or do not seek any help at all.He said,“Sometimes it’s because there is no treatment available—no antivenom(抗蛇毒血清),which is the specific(特殊的)drug to treat snakebites—or health care staff do not know how to treat snakebites,and sometimes its because transportation to get to a health facility is not available or too expensive.
Here is no single antivenom that can be used to treat all snakebites.The antivenom must be specific to the kind of snake that bit the person.In some countries the treatment is costly,while in others there is no such treatment.What is this passage mainly about?( )
| A．Snakebite deaths around the world. |
| B．Progress in fighting snakebite deaths. |
| C．Snakebite treatment around the world. |
| D．The chances of surviving a poisonous snakebite. |
After being rubbed an ointment containing nitric oxide,the rats .
| A．suffered no pain |
| B．died immediately |
| C．lived a little longer |
| D．started feeling uncomfortable |
What does Paragraph 3 suggest?( )
| A．The number of deaths caused by snakebites is becoming lower each year. |
| B．The nitric oxide ointment has saved thousands of people’s lives. |
| C．It is very important to find an effective way to treat snakebites. |
| D．The number of deaths caused by snakebites worldwide is low. |
What does the underlined word “prohibited” in Paragraph 4 mean?( )
| A．caused. | B．considered. |
| C．examined. | D．prevented. |
What is implied in the last paragraph?( )
| A．Antivenom can be made very easily. |
| B．It’s very important to use the correct antivenom to treat snakebite victims. |
| C．Antivenom is extremely expensive all over the world. |
| D．A person bitten by a snake will survive as long as there is antivenom. |
Do you know blood types?
Special care must be taken in selecting new blood for a badly injured person, who would be killed by the transfusion (输血) if the blood is too different from his own.
There are four basic types of blood A. B. A B. and O. Blood type, like hair and height, comes from parents. Basically, A and B can not be mixed. AB, sometimes called the universal recipient (万能受血者), may receive A or B,. O type, often called the universal donor (万能输血者), gives his blood to any other group. Patients usually receive nothing, but salt or plasma (血浆) until their blood can be matched as exactly as possible in the blood bank of a hospital. There is a relationship between your blood type and your nationality (国籍). Among Europeans, about 42 % have type A while 45 % have type O. The fewest is the type B. Which of the following show the correct relationship in blood transfusion ("→"means giving blood to...)?
| A． | B． | C． | D． |
Usually person who has been injured and lost too much blood should be given a blood transfusion______.
| A．after he receives salt and plasma | B．before he feels uncomfortable |
| C．when the new blood fits his body | D．as soon as accident happens |
From this passage we can know that among Europeans ______ 13 % have the type B.
A. about B. no more than C. less than D. at most
Good afternoon, and welcome to England. We hope that your visit here will be a pleasant one. Today, I would like to draw your attention to a few of our laws.
The first one is about drinking. Now, you may not buy wine in this country if you are under 18 years of age, nor may your friends buy it for you.
Secondly, noise. Enjoy yourselves by all means, but please don't make unnecessary noise, especially at night. We ask you to respect other people who may wish to be quiet.
Thirdly, crossing the road. Be careful. The traffic moves on the left side of the road in this country. Use pedestrian crossings (人行道) and do not take any chances when crossing the road.
My next point is about rubbish. It isn't lawful to drop rubbish in the street. When you have something to throw away, please put it in your pocket and take it home, or put it in a dustbin.
Finally, as regards (至于) smoking, it is against the law to buy cigarettes or tobacco if you are under 16 years of age.
I'd like to finish by saying that if you require any sort of help or assistance, you should contact the police, who will be pleased to help you. You can call, write or directly go to ask any policeman. Who do you think is most likely to make the speech?
| A．A guide | B．A person who makes laws |
| C．A teacher | D．An English officer |
How many laws are there discussed in the speech?
| A．Four | B．Three | C．Six | D．Five |
The main purpose of this speech is to __________.
| A．tell people that those above 18 can drink and smoke there |
| B．declare (宣布) the different laws of England |
| C．give advice to travelers to the country |
| D．warn people against going to the country |
The underlined word "contact" in the last paragraph means to __________.
| A．keep in touch with (联系) | B．turn to | C．make a call to | D．write to |
Learners of English, especially self-taught learners may have troubles in understanding speeches by native speakers. The following ways might help improve their listening ability.
First of all, do things step by step. It is not good to listen to something beyond your level. Better choose a proper course and start with the first book. Go on to the second book only after you are sure you understand the first one.
Secondly, stick to (坚持) one course of study. Don't change books often. Never let your attention be attracted (吸引) by another course just because it seems to be more "fashionable" (时髦).
Thirdly, listen to the English news program over the radio from time to time. Better go through the news stories in the Chinese-language newspaper first. That will make it easy for you to understand the English news on the radio.
Fourthly, if you have time, listen to some interesting stories in Special English from the V. O. A. or other listening materials（材料）of the same level as that of your textbook. This is a piece of advice to learners of English on how to ______.
| A．improve their listening ability | B．read fast |
| C．write better English and read faster | D．speak correctly |
If you want to understand the English news program on the radio, you should ________.
| A．read the Chinese-language newspaper step by step |
| B．read again and again the Chinese-language newspaper |
| C．go through the Chinese-language newspaper |
| D．be able to recite the Chinese language newspaper |
"Beyond your level" means something _______.
| A．easy for you |
| B．too difficult for you |
| C．not too easy and not too difficult for you. |
| D．just all right for you |
The author advised that once you have taken up a course, you ______.
| A．should stick to it |
| B．should begin with the last book |
| C．should take up other courses if they are more fashionable |
| D．shouldn't do anything else |
A man stayed in his house as a flood engulfed (包围) his town. Two men in a boat came to his house and offered to take him to safety. “No, thank you,” said the man, “God will help me.”
As the waters rose, the man retreated (撤退) to the second floor of his house. Now, two men in a motorboat came by and offered to rescue him. Again, the man refused, saying, “No, thank you. God will help me. ”
As the waters rose still higher, the man retreated again to the rooftop of his house. A plane came by, and someone inside it threw down a rope, urging (催促) the man to grab (抓住) it and be pulled up into the airplane. Once more, the man declined and said, “No, thank you. God will help me. ” Just then a powerful voice called out to the man, “You idiot! I sent you a boat, a motorboat and now a plane. What more do you want me to do?”Which of the following do you think is the best title for his passage.
| A．A Man in Floods | B．God Will Help Me |
| C．A Town in Floods | D．Different Ways to Help People out of Water |
Why didn’t the man enter the rowboat at first?
| A．Because he didn’t know the men in the boat. |
| B．Because he thought he could retreat to a higher place. |
| C．Because he was sure God would help him. |
| D．Because he was sure he could take himself to safety. |
At the end of the passage, who called out to the man?
| A．The men in the rowboat | B．The men in the motorboat |
| C．Someone in the helicopter | D．God himself |
What do you think of the man? He was .
| A．very strong | B．very silly | C．helpless | D．useless |
根据短文内容，从短文的选项中选出能填入空白处的最佳选项，选项中有两项为多余选项。
Every boy and every girl expects their parents to give them pocket money． Why do their parents just give them a certain amount? 1
The amount of money that parents give to their children to spend as they wish differs from family to family． 2Some children get weekly pocket money． Others get monthly pocket money．
First of all, children are expected to make a choice between spending and saving． Then parents should make the children understand what is expected to pay for with the money． At first, some young children may spend all of the money soon after they receive it． Parents are usually advised not to offer more money until it is the right time． 3
In order to encourage their children to do some housework, some parents give pocket money if the children help around the home． Some experts think it not wise to pay the children for doing that． 4
Pocket money can give children a chance to experience three things they can do with the money． They can spend it by giving it to a good excuse． They can spend it by buying things they want． 5Saving helps children understand that costly goals require sacrifice（牺牲）． Saving can also open the door to future saving and investing（投资）for children．
| A．They can save it for future use． |
| B．Timing is another consideration（考虑）． |
| C．As helping at home is a normal part of family life． |
| D．Some children are not good at managing the pocket money． |
E．Learning how to get money is important for children．
F．One purpose（目的）is to let kids learn how to manage their own money．
G．By doing so, these children will learn that spending must be done with a budget