Tìm tập xác định  của hàm số .

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 24 to 28:

Rural America is diverse in many ways. As we have seen, no one industry dominates the rural economy no single pattern of population decline or growth exists for all rural areas, and no statement about improvements and gaps in well-being holds true for all rural people. Many of these differences are regional in nature. That is, rural areas within a particular geographic region of the country often tend to be similar (24) _______ each other and different from areas in another region. Some industries, for example, are (25) _______ with different regions-logging and sawmills in the Pacific Northwest and New England, manufacturing in the Southeast and Midwest, and farming in the Great Plains. Persistent poverty also has a regional pattern, concentrated primarily in the Southeast. Other differences follow no regional pattern. Areas that rely heavily on the services industry are located throughout rural America, as are rural areas that have little access to advanced telecommunications services. Many of these differences, regional and non-regional are the result of a (26) _______ of factors including the availability of natural (27) ______; distance from and access to major metropolitan areas and the information and services found there; transportation and shipping facilities; political history and structure; and the racial, ethnic, and (28) ______ makeup of the population.

Question 25:       

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 15 to 19:

Fashions have always changed with time. No (15) ________ Roman girls worried about having the latest hairstyle and boys in Ancient Egypt wanted to have sandals that were cool and not the sensible ones their mothers preferred. Look (16) ________over recent times, there seem to be two main differences in the way fashions have changed compared to earlier time. Firstly, (17) ________ more people have a choice of clothes available to them. There are few places in the world where the trainers, the caps or the T-shirts of teenagers do not change from one year to the next. Secondly, styles are (18) ________within a much shorter time than they used to be. For instance, in the 1960s, (19) ________ had the same low waists and narrow skirts as forty years before. In the early years of the 21st century, the shops are full of long skirts and colored scarves like the ones in fashion only thirty years before. Soon, we will find that the really fashionable people look no different from the rest of us, because it is only ten years since their clothes were in fashion before!  

Question 19:

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 15 to 19:

Fashions have always changed with time. No (15) ________ Roman girls worried about having the latest hairstyle and boys in Ancient Egypt wanted to have sandals that were cool and not the sensible ones their mothers preferred. Look (16) ________over recent times, there seem to be two main differences in the way fashions have changed compared to earlier time. Firstly, (17) ________ more people have a choice of clothes available to them. There are few places in the world where the trainers, the caps or the T-shirts of teenagers do not change from one year to the next. Secondly, styles are (18) ________within a much shorter time than they used to be. For instance, in the 1960s, (19) ________ had the same low waists and narrow skirts as forty years before. In the early years of the 21st century, the shops are full of long skirts and colored scarves like the ones in fashion only thirty years before. Soon, we will find that the really fashionable people look no different from the rest of us, because it is only ten years since their clothes were in fashion before!  

Question 18:

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 15 to 19:

Fashions have always changed with time. No (15) ________ Roman girls worried about having the latest hairstyle and boys in Ancient Egypt wanted to have sandals that were cool and not the sensible ones their mothers preferred. Look (16) ________over recent times, there seem to be two main differences in the way fashions have changed compared to earlier time. Firstly, (17) ________ more people have a choice of clothes available to them. There are few places in the world where the trainers, the caps or the T-shirts of teenagers do not change from one year to the next. Secondly, styles are (18) ________within a much shorter time than they used to be. For instance, in the 1960s, (19) ________ had the same low waists and narrow skirts as forty years before. In the early years of the 21st century, the shops are full of long skirts and colored scarves like the ones in fashion only thirty years before. Soon, we will find that the really fashionable people look no different from the rest of us, because it is only ten years since their clothes were in fashion before!  

Question 17:

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 15 to 19:

Fashions have always changed with time. No (15) ________ Roman girls worried about having the latest hairstyle and boys in Ancient Egypt wanted to have sandals that were cool and not the sensible ones their mothers preferred. Look (16) ________over recent times, there seem to be two main differences in the way fashions have changed compared to earlier time. Firstly, (17) ________ more people have a choice of clothes available to them. There are few places in the world where the trainers, the caps or the T-shirts of teenagers do not change from one year to the next. Secondly, styles are (18) ________within a much shorter time than they used to be. For instance, in the 1960s, (19) ________ had the same low waists and narrow skirts as forty years before. In the early years of the 21st century, the shops are full of long skirts and colored scarves like the ones in fashion only thirty years before. Soon, we will find that the really fashionable people look no different from the rest of us, because it is only ten years since their clothes were in fashion before!  

Question 16:

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phases that best fits each of the numbered blanks from 34 to 38:

People have always dreamt of living forever. Although we all know this will never happen, we will want to live as long as possible. __(34)__, there are advantages and disadvantages of a long life.In the first place, people who live longer can spend more time with their family and friends. Secondly, __(35)__ have busy working lives look forward to a long, relaxing life, when they can do the things they‘ve never had time for. __(36)__, there are some serious disadvantages. Firstly, many people become ill and consequently have to spend time in hospital or become burden __(37)__ the children and friends. Many of them find this dependence annoying or embarrassing. In addition to this, __(38)__ the fewer friends they seem to have because old friends die or become and it’s often difficult to make new friends. To sum up, living to a very old age is worthwhile for those who stay healthy enough to remain independent and enjoy life.

Question 38:

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phases that best fits each of the numbered blanks from 34 to 38:

People have always dreamt of living forever. Although we all know this will never happen, we will want to live as long as possible. __(34)__, there are advantages and disadvantages of a long life.In the first place, people who live longer can spend more time with their family and friends. Secondly, __(35)__ have busy working lives look forward to a long, relaxing life, when they can do the things they‘ve never had time for. __(36)__, there are some serious disadvantages. Firstly, many people become ill and consequently have to spend time in hospital or become burden __(37)__ the children and friends. Many of them find this dependence annoying or embarrassing. In addition to this, __(38)__ the fewer friends they seem to have because old friends die or become and it’s often difficult to make new friends. To sum up, living to a very old age is worthwhile for those who stay healthy enough to remain independent and enjoy life.

Question 37:

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phases that best fits each of the numbered blanks from 34 to 38:

People have always dreamt of living forever. Although we all know this will never happen, we will want to live as long as possible. __(34)__, there are advantages and disadvantages of a long life.In the first place, people who live longer can spend more time with their family and friends. Secondly, __(35)__ have busy working lives look forward to a long, relaxing life, when they can do the things they‘ve never had time for. __(36)__, there are some serious disadvantages. Firstly, many people become ill and consequently have to spend time in hospital or become burden __(37)__ the children and friends. Many of them find this dependence annoying or embarrassing. In addition to this, __(38)__ the fewer friends they seem to have because old friends die or become and it’s often difficult to make new friends. To sum up, living to a very old age is worthwhile for those who stay healthy enough to remain independent and enjoy life.

Question 36:

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase thet best fits each of the numbered blanks from 31 to 35:

 In the western customs (31) _____ hands is the customary form of greeting, but in China a nod of the head or (32) ____ bow is sufficient. Hugging and kissing when greeting are uncommon. Business cards are often (33) _____ and yours should be printed in your own language and in Chinese. Also, it is more respectful to present your card or a gift or-any other article using (34) _____ hands. The Chinese are (35) _____ applauders. You may be greeted with group clapping, even by small children. When a person is applauded is this practice it is the custom for that person to return the applause or a “thank you”.   

Question 35:

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase thet best fits each of the numbered blanks from 31 to 35:

 In the western customs (31) _____ hands is the customary form of greeting, but in China a nod of the head or (32) ____ bow is sufficient. Hugging and kissing when greeting are uncommon. Business cards are often (33) _____ and yours should be printed in your own language and in Chinese. Also, it is more respectful to present your card or a gift or-any other article using (34) _____ hands. The Chinese are (35) _____ applauders. You may be greeted with group clapping, even by small children. When a person is applauded is this practice it is the custom for that person to return the applause or a “thank you”.   

Question 33: