Số tròn chục liền trước của số 398 là:

A. 300

B. 390

C. 397

D. 399

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the questions below.

     Because writing has become so important in our culture, we sometimes think of it as more real than speech. A little thought, however, will show why speech is primary and writing secondary to language. Human beings have been writing (as far as we can tell from surviving evidence) for at least 5000 years; but they have been talking for much longer, doubtless ever since there have been human beings.

     When writing did develop, it was derived from and represented speech, although imperfectly. Even today there are spoken languages that have no written form. Furthermore, we all learn to talk well before we learn to write; any human child who is not severely handicapped physically or mentally will learn to talk. a normal human being cannot be prevented from doing so. On the other hand, it takes a special effort to learn to write. In the past many intelligent and useful members of society did not acquire the skill, and even today many who speak languages with writing systems never learn to read or write, while some who learn the rudiments of those skills do so only imperfectly.

     To affirm the primacy of speech over writing is not, however, to disparage the latter. One advantage writing has over speech is that it is more permanent and makes possible the records that any civilization must have. Thus, if speaking makes us human, writing makes us civilized.

We sometimes think of writing as more real than speech because ______.

A. writing is secondary to language

B. human beings have been writing for at least 5000 years

C. it has become very important in our culture

D. people have been writing since there have been human beings

A. 13; 44; 76

B. 40; 57; 99         

C. 70; 25; 160

D. 40; 85; 69

Mark the letter A, B,C, or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following.

An international medical conference initiated by Davison resulted in the birth of the League of Red Cross Societies in 1991

A. treated 

B. dedicated 

C. helped 

D. started

Ứng với công thức C₅H₁₀O₂ có bao nhiêu đồng phân axit

A. 2           

B. 3              

C. 4                   

D. 5

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 33 to 37.

There has been an outbreak of avian influenza, better known as bird flu in Asia recently. The first (33) _____ died two weeks ago in Vietnam and there have been the cases reported since in Thailand, and there are some suspected cases in Cambodia as well as.

Wild birds are affected by a large number of flu viruses, just as the humans and other animals are, but they are normally exclusive to birds. If the viruses manage to mutate, they can to jump the species barrier and infect human beings. The first case (34) _____ someone died was in Hong Kong in 1997.

There are the several different forms of bird flu, ranging from mild to very (35) _____ infections, which spreading rapidly and kill many of the birds they infect. It is spread by wild birds-ducks, in particular – which carry the virus, but aren't killed by it. They can spread the virus to farm birds through (36) _____ contact or by the contaminating water supplies.

World Health Organization officials have attributed the spread of bird flu to human contact with the droppings of infected birds and (37) _____ sanitation. There was no evidence at first that the virus spread from person to person, though there has been a case of this happening being investigated by scientists.

Điền vào ô số 34

A. where

B. when      

C. which     

D. why 

Tìm số nguyên x, biết: a) x -11 = -3; b) x - ( -10) = 5. c) 5 - x = 8 - (-2); d)  x -3 = (-3) -7.

Mẹ An mua được một số cây hoa ngọc thảo gồm có 36 cây màu hồng, 27 cây màu trắng  và 54 cây màu tím. Mẹ An muốn trồng xen kẽ các loại hoa vào từng chậu sao cho số hoa mỗi chậu là như nhau. Hỏi mỗi chậu có bao nhiêu cây hoa mỗi loại? Biết rằng số chậu cần tìm là một số nguyên tố.