In the 19th century, doctors tried to transfuse blood (输血)to patients who had lost blood in accidents or to try to save them. However, in most cases there would be a horrible reaction. When the donated blood mixed with the patient's own blood，it clotted (凝结)almost immediately. That stopped the circulation (循环)and the patient would die. Born on 14th June 1868，Karl Landsteiner，a doctor in Vienna, was very concerned about this. He knew there was something in the blood that caused reactions, but some people did manage to escape. Perhaps different people had different kinds of blood? He got a lot of blood samples (标本)from people, and mixed and matched them. Blood has two parts，the blood cells and the liquid serum(血清).You take blood cells from one person and mix them with the serum of another. If they react, the cells will clot and form a big lump. That means it is not safe to transfuse blood between these people. Landsteiner matched hundreds of samples like this，to find out who was safe for whom and who wasn’t. In fact, there were blood groups now called A, B, AB and O.
So what was going on in the blood? All our red blood cells have sugar molecules(糖分子) that are stuck on their surfaces. The red blood cells of people with group A have one kind of sugar, while those with B have another. People with AB have both of these while people with O have none.
People with the A blood group have a chemical substance called anti-B, while those of B blood group have anti-A in their serum. People with AB group have neither anti-A nor anti-B, while people with O have both. If you were B group and got blood from an A person,the anti- A in your blood would cause all the cells with A-sugar on them to clot immediately, stopping the circulation of blood.
In 1907, Dr. Reuben Outenberg carried out the first safe blood transfusion by matching blood groups. Blood transfusion became quite common from then on. And it helped saved thousands of lives in the First World War.
1.What does the passage mainly talk about?
A.Accidents in blood transfusion.
B.The discovery of blood groups.
C.Who Karl Landsteiner is.
D.The success of Dr. Reuben Otlenberg.
2.What inspired Landsteiner to carry out his experiment?
A.Some doctors in the 19th century.
B.The cause of some patient deaths.
C.Many medical accidents that he came across.
D.Certain successful cases of blood Iransrusion.
3.In which of the following can ''anti-A'' be found?
A.Only in the A blood group.
B.Only in the B blood group.
C.Only in the AB blood group.
D.In blood groups of B and O.
4.Since when has blood transfusion Income universal?
A.The first successful blood transfusion done by Ottenberg.
B.The time when blood groups were named by Landsteiner.
C.The year when the First World War broke out.
D.The blood transfusion by matching blood groups.
高二英语阅读理解中等难度题
In the 19th century, doctors tried to transfuse blood (输血)to patients who had lost blood in accidents or to try to save them. However, in most cases there would be a horrible reaction. When the donated blood mixed with the patient's own blood，it clotted (凝结)almost immediately. That stopped the circulation (循环)and the patient would die. Born on 14th June 1868，Karl Landsteiner，a doctor in Vienna, was very concerned about this. He knew there was something in the blood that caused reactions, but some people did manage to escape. Perhaps different people had different kinds of blood? He got a lot of blood samples (标本)from people, and mixed and matched them. Blood has two parts，the blood cells and the liquid serum(血清).You take blood cells from one person and mix them with the serum of another. If they react, the cells will clot and form a big lump. That means it is not safe to transfuse blood between these people. Landsteiner matched hundreds of samples like this，to find out who was safe for whom and who wasn’t. In fact, there were blood groups now called A, B, AB and O.
So what was going on in the blood? All our red blood cells have sugar molecules(糖分子) that are stuck on their surfaces. The red blood cells of people with group A have one kind of sugar, while those with B have another. People with AB have both of these while people with O have none.
People with the A blood group have a chemical substance called anti-B, while those of B blood group have anti-A in their serum. People with AB group have neither anti-A nor anti-B, while people with O have both. If you were B group and got blood from an A person,the anti- A in your blood would cause all the cells with A-sugar on them to clot immediately, stopping the circulation of blood.
In 1907, Dr. Reuben Outenberg carried out the first safe blood transfusion by matching blood groups. Blood transfusion became quite common from then on. And it helped saved thousands of lives in the First World War.
1.What does the passage mainly talk about?
A.Accidents in blood transfusion.
B.The discovery of blood groups.
C.Who Karl Landsteiner is.
D.The success of Dr. Reuben Otlenberg.
2.What inspired Landsteiner to carry out his experiment?
A.Some doctors in the 19th century.
B.The cause of some patient deaths.
C.Many medical accidents that he came across.
D.Certain successful cases of blood Iransrusion.
3.In which of the following can ''anti-A'' be found?
A.Only in the A blood group.
B.Only in the B blood group.
C.Only in the AB blood group.
D.In blood groups of B and O.
4.Since when has blood transfusion Income universal?
A.The first successful blood transfusion done by Ottenberg.
B.The time when blood groups were named by Landsteiner.
C.The year when the First World War broke out.
D.The blood transfusion by matching blood groups.
高二英语阅读理解中等难度题查看答案及解析
John Snow was 1.____ expert doctor in London in the 19th century. At that time a lot of people were infected with cholera and died , so he was 2. ____ (determine) to find the cause of it so that he could help those3.____ (expose) to it .He began to gather information when another outbreak hit London in 1854. He marked on the map the exact places 4.____ the dead people had lived and found that most of5.____ (die )were near a water pump .After careful investigations John Snow announced6.____ certainty that water 7.____ (carry ) germs was 8.____ (blame) for the spreading of cholera . In order to prevent this 9.____ (happen) again , he suggested that the source of all the water supplies 10.____ (examine) and instructed the water companies not to allow people to drink the polluted water any more . At last “King Choler” was defeated .
高二英语其他题中等难度题查看答案及解析
In the 19th century, Americans from the eastern states moved out west to settle in the rich new lands along the Pacific Coast. The most difficult part of their trip was crossing “the Great American Desert” in the western part of the United States by horse and wagon.
The western desert can be very dangerous. There is little water and there are few trees. But the desert also has scenery of great beauty. Tall towers of red and yellow stone rise sharply from the flat, sandy valley floor. The scene has been photographed many times and appears in movies and on TV.
In Arizona, man-made dams across the Colorado River have made two large lakes in the middle of the dry desert country. At Lake Powell, the red stone arch of Rainbow Bridge rises high above the blue lake.
There are few roads. Many areas of Lake Powell’s shore can only be reached by boat or on foot. But hikers in this empty desert land sometimes find very old native American pictures, painted on the rocks.
In Death Valley, California, the summer temperature rises to 130°F—165°F. There is less than inches of rain each year. Death Valley is the lowest place in America---925 meters below sea level. In the 1800s, many travelers died when they tried to cross this waterless valley in the terrible heat.
Although the desert is dry and seems empty, there is plenty of life if you look closely. Snakes and rats have learned how to live in the desert heat. They live underground and come out at night, when it is cool. Plants such as cacti need very little water. When it does rain in the desert (sometimes only once or twice a year), plants grow quickly, and flowers open in a single day. For a short time, the desert is covered with brilliant (very bright) colors.
1.In the 19th century, Americans moved from east to west because they ________.
A．enjoyed the trip B．wanted to make their home there
C．wanted to find new grassland there D．had no water to drink
2.From this passage. we can conclude that ________.
A．the western desert is a good place for people to live in
B．there is little water but there are many trees in the desert
C．the desert is dangerous but it is full of beauty
D．till now, people know little about the desert
3.In the 1800s, many travelers died in Death Valley because of ________.
A．illness B．high temperature
C．cold weather D．poisonous water
4.In the desert, animals will die ________.
A．if they move about B．if they can’t make holes underground
C．if they come out at night D．if they drink much water
高二英语阅读理解中等难度题查看答案及解析
In the 19th century, Americans from the eastern states moved out west to settle in the rich new lands along the Pacific Coast. The most difficult part of their trip was crossing “the Great American Desert” in the western part of the United States by horse and wagon.
The western desert can be very dangerous. There is little water and there are few trees. But the desert also has scenery of great beauty. Tall towers of red and yellow stone rise sharply from the flat, sandy valley floor. The scene has been photographed many times and appears in movies and on TV.
In Arizona, man-made dams across the Colorado River have made two large lakes in the middle of the dry desert country. At Lake Powell, the red stone arch of Rainbow Bridge rises high above the blue lake.
There are few roads. Many areas of Lake Powell’s shore can only be reached by boat or on foot. But hikers in this empty desert land sometimes find very old native American pictures, painted on the rocks.
In Death Valley, California, the summer temperature rises to 130°F—165°F. There is less than inches of rain each year. Death Valley is the lowest place in America---925 metres below sea level. In the 1800s, many travelers died when they tried to cross this waterless valley in the terrible heat.
Although the desert is dry and seems empty, there is plenty of life if you look closely. Snakes and rats have learned how to live in the desert heat. They live underground and come out at night, when it is cool. Plants such as cacti need very little water. When it does rain in the desert (sometimes only once or twice a year), plants grow quickly, and flowers open in a single day. For a short time, the desert is covered with brilliant (very bright) colours.
1.In the 19th century, Americans moved from east to west because they ________.
A．enjoyed the trip B．wanted to make their home there
C．wanted to find new grassland there D．had no water to drink
2.From this passage. we can conclude that ________.
A．the western desert is a good place for people to live in
B．there is little water but there are many trees in the desert
C．the desert is dangerous but it is full of beauty
D．till now, people know little about the desert
3.In the 1800s, many travelers died in Death Valley because of ________.
A．illness B．high temperature
C．cold weather D．poisonous water
4.In the desert, animals will die ________.
A．if they move about B．if they can’t make holes underground
C．if they come out at night D．if they drink much water
高二英语阅读理解中等难度题查看答案及解析
.
In the 19th century, Americans from the eastern states moved out west to settle in the rich new lands along the Pacific Coast. The most difficult part of their trip was crossing “the Great American Desert” in the western part of the United States by horse and wagon.
The western desert can be very dangerous. There is little water and there are few trees. But the desert also has scenery of great beauty. Tall towers of red and yellow stone rise sharply from the flat, sandy valley floor. The scene has been photographed many times and appears in movies and on TV.
In Arizona, man-made dams across the Colorado River have made two large lakes in the middle of the dry desert country. At Lake Powell, the red stone arch of Rainbow Bridge rises high above the blue lake.
There are few roads. Many areas of Lake Powell’s shore can only be reached by boat or on foot. But hikers in this empty desert land sometimes find very old native American pictures, painted on the rocks.
In Death Valley, California, the summer temperature rises to 130°F—165°F. There is less than inches of rain each year. Death Valley is the lowest place in America---925 meters below sea level. In the 1800s, many travelers died when they tried to cross this waterless valley in the terrible heat.
Although the desert is dry and seems empty, there is plenty of life if you look closely. Snakes and rats have learned how to live in the desert heat. They live underground and come out at night, when it is cool. Plants such as cacti need very little water. When it does rain in the desert (sometimes only once or twice a year), plants grow quickly, and flowers open in a single day. For a short time, the desert is covered with brilliant (very bright) colors.
67．In the 19th century, Americans moved from east to west because they .
A．enjoyed the trip B．wanted to make their home there
C．wanted to find new grassland there D．had no water to drink
68．From this passage. we can conclude that .
A．the western desert is a good place for people to live in
B．there is little water but there are many trees in the desert
C．the desert is dangerous but it is full of beauty
D．till now, people know little about the desert
69．In the 1800s, many travelers died in Death Valley because of .
A．illness B．high temperature
C．cold weather D．poisonous water
70．In the desert, animals will die .
A．if they move about B．if they can’t make holes underground
C．if they come out at night D．if they drink much water
高二英语阅读理解简单题查看答案及解析
Empty Deserts
In the 19th century Americans from the eastern states moved out west to settle in the rich new lands along the Pacific coast. The most difficult part of their trip was crossing the “Great American Desert in the western part of the United States by horse and wagon.
The western desert can be very dangerous. There is little water and there are few trees. But the desert also has scenery of great beauty. Tall towers of red and yellow stone rise sharply from the flat sandy valley floor. The scene has been photographed many times and appears in movies and in TV.
In Arizona, man made dams across the Colorado River have made two large lakes in the middle of the dry desert country. At Lake Powell, the red stone arch of Rainbow Bridge rises high above the blue lake.
There are few roads. Many areas of Lake Powell’s shore can only be reached by boat or on foot. But hikers in this empty desert land sometimes find very old native American pictures, painted on the rocks.
In Death Valley, California, the summer temperature rises to 130 degrees. There is less than two inches of rain each year. Death Valley is the lowest place in America---- 925 meters below sea level. In the 1800s, many travelers died when they tried to cross this waterless valley in the terrible heat.
Although the desert is dry and seems empty, there is plenty of life if you look closely. Small insects, snakes and rats have learned how to live in the desert heat. They live under ground and come out at night, when it is cool. Plants such as cacti need very little water. When it does rain in the desert (sometimes only once or twice a year), plants grow quickly, and flowers open in a single day. For a short time, the desert is covered with brilliant colors.
1.In the 19th century, Americans moved from the east to the west because they ______.
A. enjoy the trip B. wanted to make their home there
C. wanted to find new grassland there D. had no water to drink
2.From the passage, we can conclude that ______.
A. the western desert is a good place for people to live in
B. there is little water but there are many trees in the desert
C. the desert is dangerous but it is full of life
D. till now, people know little about the desert
3. If you want to find some old native American pictures painted on the rock you must go ______.
A. on foot B. by boat C. by car D. by plane
4.In the 1800s many travelers died in Death Valley because of ______.
A. illness B. high temperature
C. cold weather D. poisonous water
5.In the desert, animals will die ______.
A. if they move about B. if they cannot make holes underground
C. if they come out at night D. if they drink much water
高二英语阅读理解简单题查看答案及解析
With the ___________ of making a fortune, many Chinese came to Australia in the 19th century to wash sand for gold.
A. courage B. intention C. approach D. right
高二英语单项填空中等难度题查看答案及解析
In today's Ireland, it seems hard to imagine the grim(令人沮丧的) days of the 19th century when so many of the population starved, or that, in those days, many poor people had no clue how to prepare any food other than boil a potato. 1.
Tourism has made a vast difference to the standards of cooking in Ireland. Until recently there was hardly any tradition of eating out in many districts, except perhaps on very few occasions at a local hotel. Patterns of diet were old-styled, based firmly on 'meat and two vegetables' (somewhat overcooked), potatoes (of course) and large quantities of dairy produce. 2. Tourist demands for predictable, inexpensive fast-food are met, as everywhere, with hamburgers and pizzas - a better bet being fish and chips. But more sophisticated tastes have introduced whole foods and vegetarian restaurants (almost unheard of before), and a vast number of new restaurants, often French in style, have opened in the main tourist centres. Food 'events' such as Kinsale's Gourmet festival or Galway's Oyster Festival attract large numbers of visitors and reflect the new interest in food.
Whatever Irish cooking lacks in finesse（精细）, it nearly always makes up for in plenty, and ingredients(成分) are of a high quality. 3.. One of its great specialities is soda bread. It is made with buttermilk and is served fresh and warm with every meal. Recently there has been a return to simple Irish foods such as stews（炖菜）and potato dishes.
4.A 'traditional Irish breakfast' is a plateful of bacon and eggs with soda and potato breads. Accommodation rates are nearly always quoted(报价) with a full breakfast included. 5.
A. So you might as well eat enough to keep you going all day and get your money's worth!
B. Home-grown produce includes rich dairy foods, beef, lamb and pork, and a great variety of seafood.
C. Eating out at weekends is traditional in most parts of Ireland.
D. Now things are very different.
E. Food produce is fresher.
F. One of the best-value meals in Ireland is breakfast.
G. Nowadays, it is quite possible to eat both well and heartily all over the island.
高二英语七选五中等难度题查看答案及解析
You have been badly injured in a car accident. It is necessary to give you a blood transfusion because you lost a great deal of blood in the accident. However, special care must be taken in selecting new blood for you. If the blood is too different from your own, the transfusion could kill you.
There are four basic types of blood; A, B, AB, and O. A simple test can make sure of a person's blood type. Everybody is born with one of these four types of blood. Blood type, like hair color and height, is received from parents.
The four groups must be transfused carefully. A and B cannot be mixed. A and B cannot receive AB, but AB may receive A or B. O can give to any other group; therefore, it is often called the universal donor (万能捐赠者). For the opposite reason, AB is sometimes called the universal recipient（接受者）. However, because so many reactions (反应) can happen in transfusions（输血）, patients usually receive only salt of plasma (liquid part of blood) until their blood can be matched as exactly as possible in the blood bank of a hospital. In this way, it is possible to prevent the transfusion from any bad reactions.
86. People with type A blood can receive type .
A. AB B. B C. O D. all of the three
87. If you need a blood transfusion, the best and safest blood for you is .
A. a mixture of type A and type B
B. a mixture of salt, plasma and type O
C. type AB
D. exactly the same type as your own
88. The phrase "universal recipient" means a person who .
A. can receive blood of type A or B
B. can receive blood of any other type
C. can give blood to anybody
D. cannot give blood to others
89. A good title for this article is .
A. Getting Enough Blood
B. Differences Between Blood Types
C. Man's Four Types of Blood
D. How to Give Blood Transfusion
90. Which of the following statement is NOT true?
A. Carelessness in a blood transfusion may lead to death.
B. AB is the mixture of A and B
C. AB is called the universal recipient because it can receive any other group.
D. In transfusions, patients usually receive only salt of plasma at first.
高二英语阅读理解简单题查看答案及解析
Many American presidents in the 19th century were born in poor families. They spent their childhood in little wooden rooms. They got little education. Washington and Lincoln, for example, never went to school and they taught themselves. Lincoln once did jobs for a worker, shop-keeper and post-master in his early years.
A large number of American presidents had experiences in the army. The two best known were Ulysses Grant and Dwight D. Eisenhower. Grant was a general in the American Civil War and Eisenhower was hero in the Second World War. It happened that they graduated from the same school--West Point Military Academy(西点军校).One may be surprised to learn that both of them didn't do well in the school. Eisenhower, for example, was once fined(punished to pay money) because he broke the rules of the school.
The jobs of the U.S. presidents are tiring. He must keep an eye on anything important that happens both at home and abroad. Every day, a lot of work waits for him to do and he has to make many important decisions. When Franklin Roosevelt was a child, he was once brought to visit President Taft. The old president said to him," When you grow up, you should not be president. It's a tiring job."
1.How many American presidents are mentioned in this passage?
A． 4 B．5 C．7 D． 6
2.Who regard the jobs of the U.S. presidents as the tiring ones?
A． Taft B．Grant C．Eisenhower D．Roosevelt
3.In this passage, "keep an eye on" means _______.
A．see B．take care of C．look at fixedly D．stare at
4.The second paragraph mainly tells us ______.
A．that Eisenhower became famous in the Second World War
B．how Grant became a general
C．that many of the U.S. presidents had served in the army
D．that Grant and Eisenhower were both schoolmates
5.Which of the following is true?
A．F. Roosevelt was one of the U.S. presidents before Grant.
B．Washington was born in a very poor family.
C．West Point Military Academy was founded in the Second World War.
D．Lincoln was elected the U.S. president after Grant.
高二英语阅读理解中等难度题查看答案及解析