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Các nhà khoa học từ lâu đã phải vật lộn với cách đo lường tác động của biến đổi khí hậu đối với động vật hoang dã. Điều này đặc biệt đúng đối với các loài chim bay vào và ra khỏi các khu vực ven biển giáp với Bắc Băng Dương. Trong quá khứ, các nhà nghiên cứu phụ thuộc chủ yếu vào thông tin thu thập bởi vệ tinh để theo dõi sự di chuyển của chim và động vật. Nhưng phương pháp này có thể tốn kém và dẫn đến lượng thông tin khổng lồ, có thể khó xử lý. Bây giờ các nhà khoa học đang chuyển sang một loại công nghệ khác để giúp họ theo dõi chim và động vật hoang dã khác. Songbirds đặc biệt khó học trong tự nhiên. Họ có thể bay qua hàng ngàn cây số và cơ thể của họ quá nhỏ cho các thiết bị theo dõi điện tử. Một báo cáo mới cho biết về một dự án trong đó các nhà nghiên cứu ghi nhận loài chim biết hót và sau đó đưa âm thanh vào một chương trình máy tính để nghiên cứu. Các nhà nghiên cứu đã tạo ra các thuật toán học máy với khả năng tập trung vào các cuộc gọi chim trong khi bỏ qua các tiếng ồn khác. Thuật toán giúp cải thiện khả năng dự đoán kết quả chính xác. Các phương pháp học máy tương tự đã được sử dụng để nhận ra lời nói của con người.
Do you think the animals can understand each other? The answer is yes. They can communicate to each other by signs and sounds. For example, dogs communicate in many ways. They not only bark, even they howl, growl, snarl, and whine. They lift a paw, or bare their teeth. Other dogs can understand what these sounds and actions mean_.
Animals communicate with each other not only with sounds and movements but with smell. Most animals that live in herds depend on smell to keep together. And, of course, we know how dogs recognize each other by smell.
Apes are supposed to be among the most intelligent of animals, yet, they really have no better “language” than other animals. They make many sounds and expressions of the mouth to communicate their feelings of anger or hunger or joy, but they have nothing like the words of human speech.
By the way, unlike human beings who have to learn how to talk, apes and other animals know their “language” by instinct. They will make the right kind of cries and sounds and expression even if they have never seen another animal like themselves before.
Birds, however, learn their way of singing, at least in part. That is why a sparrow brought up among canaries will try to sing like one. It has been learning the wrong “language”!
Health is something we tend to ignore when we have it. When our body is rather well, we're hardly ever (66) ..aware..of it. But illness can come, even (67)....when.... we are young. In fact, childhood has been a very vulnerable time. Many (68).diseases....attacked children in particular and people knew very little about how to prevent such illness or how to (69).cure... them once they struck. The result was that many children died. About century ago, however, scientists found out about germs, and then everything (70)...changed.... The cause of many diseases (71)...were.. known, and cures were developed. As this medical knowledge spread the world became (72)..much... safer for children. The result is that whereas a hundred years ago the average man lived for 35 years. Nowadays, in many places of the world, people can expect to (73)..live... for years. And what do we except by the years 2010? Undoubtedly, (74) ..medical... science will continue to advance. Some people will be able to (75) ....avoid.. medical problems that are unavoidable today.
Fill each gap in the passage with a suitable word:
Almost every office now uses computer. They are used for all kinds of work. For (1)...example ..., scientists, engineers, and economists use them. Bussiness people use (2)...computers... to make business decisions. Doctors also use computers to help their patients. Computers make work easier for writers, (3)....readers..... And even students now use computers to help in (4)...their.... studies. Besides, some people (5)...have... computers at home to help them make plans (6)....or... pay bills. Everyone knows (7)..that...... computers are useful. And there are many other new computer programs. Some people like the way computers hum and sing (8)...when..... they are working. It is a happy sound, (9).....like.... the sounds of toys. Computer also have lights and pretty pictures. With a computer, anyone can feel like an artist. And computers even seem to have personalities. That may sound strange, but computers seem to have feelings. Sometimes they seem happy, (10).....Sometimes ...... they seem angry. It is easy to think they are like people.
đoán thế nhaaaa
Choose the correct phrase or clause to finish these sentences.
1. Skimming along the surface of the ocean or rising from its depths like delicate balloons, __________ to their aquatic habitat.
A. the perfect adaptation of jellyfish
B. jellyfish are perfectly adapted
C. jellyfish are adapted to perfection
D. the adaptation is perfect for jellyfish
2. __________ around, it gives us vital information about our environment.
A. The sounds are heard
B. That we hear the sounds
C. Hearing the sounds
D. Whatever the sounds are heard
3. Beginning in the Middle Ages, composers of Western music used a system of notating their compositions __________.
A. yet they would be performed by musicians
B. that be performed by musicians
C. when performed by musicians
D. so they could be performed by musicians
4. Civil Rights are the freedoms and rights __________ as a member of a community, state, or nation.
A. may have a person
B. that have a person
C. a person may have
D. and a person may have
5. During the late fifteenth century, __________ had professions in the fields of arts and crafts.
A. only a few of the native societies of America
B. only few of the native societies of America
C. few but only of the native American societies
D. a few only of the native American societies
Đáp án: A
Giải thích: Dựa vào câu: “From volunteering the community will also gain a generation of young people who care about where they live and are willing to make a commitment to improve society.”.
Dịch: Từ việc tình nguyện, cộng đồng cũng sẽ nhận lại một thế hệ người trẻ quan tâm về nơi sống và sẵn lòng cam kết cải thiện xã hội.
Đáp án: A
Giải thích: Dựa vào câu: “Volunteers also have an enormous impact on the health and well-being of communities worldwide, which allows society to thrive due to the assistance of young volunteers.”.
Dịch: Những hoạt động tình nguyện cũng có ảnh hưởng lớn đến sức khoẻ và sự thịnh vượng của cộng đồng thế giới…
true vì dựa vào cái câu 'Volunteer .... of young volunteer'
Đáp án: A
Giải thích: Dựa vào câu: “Volunteering is a way to gain a lot of skills that can be transferred into a workplace. These skills include: confidence, communication, responsibility, teamwork and innovation.”.
Dịch: Tình nguyện là 1 cách để đạt được nhiều kĩ năng mà có thể chuyển vào công sở. Những kĩ năng này bao gồm sự tự tin, giao thiệp, tinh thần trách nhiệm, hoạt động nhóm, và sự đổi mới.
If you’ve ever (67) ………….. the Northern Lights dancing in the night sky, you’ll no doubt have been amazed by their beauty. These strange natural light displays are (68) ………….. by atmospheric energy, and a recent study has indicated that not only are they pretty to look at, but they may also produce certain distinct sounds. Researchers studying the phenomenon believe they have managed to (69) ………….. the sounds.
The Northern Lights appear most powerfully in Arctic (70) ………….., where there have been tales told about the noises which (71) ………….. them for many years. People describe hearing hissing and crackling sounds, like the noises you hear when your radio is (72) ………….. for a signal.
The researchers recorded (73) ………….. but definite sounds during periods of intense atmospheric activity. They think that what might be creating the sounds are geomagnetic storms, which (74) ………….. large changes in the atmosphere. On the (75) ………….., however, the scientific community remains puzzled.
67.
A. witnessed
B. participated
C. appeared
D. gazed
68.
A. started
B. resulted
C. sourced
D. caused
69.
A. capture
B. obtain
C. bring
D. achieve
70.
A. neighbourhoods
B. grounds
C. regions
D. districts
71.
A. approach
B. accompany
C. attend
D. associate
72.
A. finding
B. seeking
C. trying
D. searching
73.
A. clear
B. faded
C. faint
D. remote
74.
A. generate
B. get
C. establish
D. lead
75.
A. all
B. whole
C. majority
D. principal
If you’ve ever (67) ………….. the Northern Lights dancing in the night sky, you’ll no doubt have been amazed by their beauty. These strange natural light displays are (68) ………….. by atmospheric energy, and a recent study has indicated that not only are they pretty to look at, but they may also produce certain distinct sounds. Researchers studying the phenomenon believe they have managed to (69) ………….. the sounds.
The Northern Lights appear most powerfully in Arctic (70) ………….., where there have been tales told about the noises which (71) ………….. them for many years. People describe hearing hissing and crackling sounds, like the noises you hear when your radio is (72) ………….. for a signal.
The researchers recorded (73) ………….. but definite sounds during periods of intense atmospheric activity. They think that what might be creating the sounds are geomagnetic storms, which (74) ………….. large changes in the atmosphere. On the (75) ………….., however, the scientific community remains puzzled.
67.
A. witnessed
B. participated
C. appeared
D. gazed
68.
A. started
B. resulted
C. sourced
D. caused
69.
A. capture
B. obtain
C. bring
D. achieve
70.
A. neighbourhoods
B. grounds
C. regions
D. districts
71.
A. approach
B. accompany
C. attend
D. associate
72.
A. finding
B. seeking
C. trying
D. searching
73.
A. clear
B. faded
C. faint
D. remote
74.
A. generate
B. get
C. establish
D. lead
75.
A. all
B. whole
C. majority
D. principal