The skin which covers the tips of the fingers and thumbs is crossed by numerous ridges (隆起) arranged in different patterns. These patterns are permanent from birth and remain exactly the same throughout a person's life, even when the skin becomes wrinkled and cracked as a result of old age. Such patterns are never passed on from parents to children, and no one in the world has the same patterns as anyone else. Even identical twins have different sets of fingerprints. As a result, fingerprints offer a most useful and foolproof way of identifying people. Any ridged part of the hand and the foot may be used as a means of identification, but finger impressions are usually preferred since they can be taken easily and quickly.
Fingerprints are classified in the ways: by general shapes and contours(轮廓), by the finger positions of the pattern-types, and by size (often measured by counting the ridges in the loops). Every set of fingerprints has different “ridge characteristics” (i. e. the print of each separate finger is different from that of all the other fingers), which belong to one of four basic groups: arches, loops, whorls and composites. All fingerprints can then be divided into 1, 024 groups. By using details in the patterns above, these 1, 024 groups can be further divided into thousands of smaller groups, thus making it possible to find a particular set of fingerprints in a few minutes.
1.According to this passage, the true statement about human fingerprints is that ____.
A.people's fingerprints sometimes can be passed on from parents to children
B.people’s fingerprints are unique but identical twins may have the same fingerprints
C.using fingerprints is the only way to identify people
D.people's fingerprints will not change in all their lives
2.We prefer to use fingerprints to identify people because ____.
A.we can never find the same set of fingerprints among human beings
B.finger impressions can be taken easily and quickly
C.fingerprints offer a most useful and foolproof way of identifying people
D.all of the above
3.The word “foolproof” (Line 7, Para. 1) most probably means ____.
A.that is permanent B.that is acceptable
C.that can not go wrong D.that is not foolish
4.About the classification of fingerprints, which is TRUE? ____.
A.Fingerprints can be classified in three ways
B.All fingerprints can be divided into 1, 024 groups and can not be divided further
C.It is not easy to find a particular set of fingerprints in a short time
D.People can not classify the fingerprints in an effective way
高二英语阅读理解中等难度题
The skin which covers the tips of the fingers and thumbs is crossed by numerous ridges (隆起) arranged in different patterns. These patterns are permanent from birth and remain exactly the same throughout a person's life, even when the skin becomes wrinkled and cracked as a result of old age. Such patterns are never passed on from parents to children, and no one in the world has the same patterns as anyone else. Even identical twins have different sets of fingerprints. As a result, fingerprints offer a most useful and foolproof way of identifying people. Any ridged part of the hand and the foot may be used as a means of identification, but finger impressions are usually preferred since they can be taken easily and quickly.
Fingerprints are classified in the ways: by general shapes and contours(轮廓), by the finger positions of the pattern-types, and by size (often measured by counting the ridges in the loops). Every set of fingerprints has different “ridge characteristics” (i. e. the print of each separate finger is different from that of all the other fingers), which belong to one of four basic groups: arches, loops, whorls and composites. All fingerprints can then be divided into 1, 024 groups. By using details in the patterns above, these 1, 024 groups can be further divided into thousands of smaller groups, thus making it possible to find a particular set of fingerprints in a few minutes.
1.According to this passage, the true statement about human fingerprints is that ____.
A.people's fingerprints sometimes can be passed on from parents to children
B.people’s fingerprints are unique but identical twins may have the same fingerprints
C.using fingerprints is the only way to identify people
D.people's fingerprints will not change in all their lives
2.We prefer to use fingerprints to identify people because ____.
A.we can never find the same set of fingerprints among human beings
B.finger impressions can be taken easily and quickly
C.fingerprints offer a most useful and foolproof way of identifying people
D.all of the above
3.The word “foolproof” (Line 7, Para. 1) most probably means ____.
A.that is permanent B.that is acceptable
C.that can not go wrong D.that is not foolish
4.About the classification of fingerprints, which is TRUE? ____.
A.Fingerprints can be classified in three ways
B.All fingerprints can be divided into 1, 024 groups and can not be divided further
C.It is not easy to find a particular set of fingerprints in a short time
D.People can not classify the fingerprints in an effective way
高二英语阅读理解中等难度题查看答案及解析
The skin is an essential part of your body and is ____ you feel cold, heat or pain.
A. where B. which C. what D. how
高二英语单项填空中等难度题查看答案及解析
课文填空
The largest organ of our body is skin, which acts as a 1. against disease, posions and so on. It has 2. functions. But when your skin gets burnt, it can be very serious. So it is very important to know first aid for burns.
However, if you’ve got burns, first, 3.clothing using scissors if necessary 4. it is stuck to the burn. For second degree burns, keep cloths cool by putting them back in a basin of cold water, 5. them out and placing them on the burned area over and over 6. for about an hour. Next, dry the burnt area 7., then cover the burned area with a dry, clean 8. without sticking to the skin, and hold it in 9. with tape. If you’ve got second or third degree burns, it’s 10. to get the victim to the doctor or hospital at once.
高二英语其他题中等难度题查看答案及解析
What is so amazing about giving blood?
The National Blood Service, which covers all of England and North Wales, needs nearly two and a half million blood donations each year. When you give blood, you’ll be doing one of the most amazing things anybody could dream of — saving a life.
___________________________
All types of blood are needed —not just rare ones. In fact, the commoner the blood type, the more are needed. So even if your blood is one of the most common types — group O for example — you can be sure that by donating three times a year, you really are doing something amazing.
What is the donation process?
The donation will last about an hour in all. When you arrive, you will be asked a few questions about your health. Then a drop of blood will be taken and tested just to make sure you’re not anemic(贫血). If all is well, your donation will be taken.
This only takes about ten minutes, during which time 470ml of blood will be collected. Most people hardly feel a thing. After a short rest, a drink and biscuits, you’ll be up and ready to go. All equipment used in the collection of your blood is new and is never reused, so you don’t have to worry about risks to your health in the collection of your blood.
Who can become a blood donor?
Becoming a blood donor really is very simple. As long as you’re in good health and aged between 17 and 60, you can become a blood donor. If you would like more information or advice, or you want to become a blood donor, ring the donor helpline on 0845 7711. The donor helpline is open 24 hours a day — every day of the year.
1.Which is the subtitle (副标题) of Paragraph 2?
A. Why should you donate blood?
B.What should you consider before donation?
C. What types of blood are needed?
D. How many times a year can you donate blood?
2.Before giving blood, you will ________.
A. take a blood test B. wait for one day
C. fill in a form D.rest for a while
3.What does the passage tell us about the donation process?
A. It takes many hours.
B. It’s done on computer.
C. It doesn’t need equipment.
D. It won’t affect donors’ health.
4.The purpose of the writing is to _______.
A. introduce the National Blood Service
B. call on people to donate blood
C. show the importance of donation
D. remind people of the danger
高二英语阅读理解中等难度题查看答案及解析
The fiddler crab (蟹) is a living clock. It shows the time of day by the colour of its skin, which is dark by day and pale by night. The crab’s changing colour follows a regular twenty—four hour plan that exactly matches the daily rhythm of the sun.
Does the crab actually keep time, or does its skin simply answer to the sun’s rays, changing colour according to the amount of light strikes it? To find out, biologists kept crabs in a dark room for two months. Even without daylight, the crab’s skin colour continued to change exactly on time.
This characteristic probably developed gradually in answer to the daily rising and setting of the sun, to help protect the crab from sunlight and enemies. After millions of years it has become completely regulated (受控制) inside the living body of the crab.
The biologists noticed that once each day the colour of the fiddler crab is especially dark, and that each day this happens fifty minutes later than on the day before. From this they discovered that each crab follows not only the rhythm of the sun but also that of the tides (潮水). The crab’s period of greatest darkening is exactly the time of low tide on the beach where it was caught!
1.The fiddler crab is like a clock because it changes colour ______.
A in a regular 24—hour rhythm B. in answer to the sun’s rays
C. at low tide D. every fifty minutes
2.The crab’s changing colour ______.
A. tells the crab what time it is B. protects the crab from the sunlight and enemies
C. keeps the crab warm D. is of no real use
3. When the fiddler crabs were kept in the dark , they ______.
A. did not change colour B. changed colour more quickly
C. changed colour more slowly D. changed colour on the same timetable
4.The crab’s colour—changing ability was probably developed ______.
A. in the process of evolution (进化) B. over millions of years
C. by the work of biologists D. both A and B
5.The best title for this selection would be ______.
A. The Sun and the Tides B. Discoveries in Biology
C. A scientific Study D. A Living Clock
高二英语阅读理解中等难度题查看答案及解析
Have you seen the film Painted Skin ______ leading actor is world-famous?
A. its B. whose C. of which D. that
高二英语单项填空中等难度题查看答案及解析
. Will you pass me the dictionary _____ the cover is dark blue?
A.its | B.which | C.whose | D.of which |
高二英语单项填空简单题查看答案及解析
The river, ________ the banks are covered with trees,is very long.
A.whose | B.which | C.of which | D.which of |
高二英语单项填空困难题查看答案及解析
There is a mountain _______ the top is always covered with snow.
A. of that B. of which C. whose D. that
高二英语单项填空困难题查看答案及解析
Don’t touch your eyes, nose and mouth, because they aren’t covered by skin and can _______ the virus more easily.
A.take up B.pick up C.make up D.set up
高二英语单项填空中等难度题查看答案及解析