VI. Read the following text then answer the questions that follow by circling its corresponding letter marked A, B, C, or D

Smallpox (đậu mùa) was the first widespread disease to be eliminated by human intervention (can thiệp). In May, 1966, the World Health Organization (WHO), an agency of the United Nations was authorized to initiate a global campaign to eradicate smallpox. The goal was to eliminate the disease in one decade. At the time, the disease posed a serious threat to people in more than thirty nations. Because similar projects for malaria and yellow fever had failed, few believed that smallpox could actually be eradicated but eleven years after the initial organization of the campaign, no cases were reported in the field. The strategy was not only to provide mass vaccinations but also to isolate patients with active smallpox in order to contain the spread of the disease and to break the chain of human transmission. Rewards for reporting smallpox assisted in motivating removed from contact with others and treated. At the same time, the entire village where the victim had lived was vaccinated. By April of 1978 WHO officials announced that they had isolated the last known case of the disease but health workers continued to search for new cases for additional years to be completely sure. In May, 1980, a formal statement was made to the global community. Today smallpox is no longer a threat to humanity. Routine vaccinations have been stopped worldwide.

Câu 41: Which of the following is the best title for the passage?

A. The World Health Organization B. Smallpox Vaccinations

Câu 42: The word “threat” in line 4 could best be replaced by

A. debate B. humiliation C. bother D. risk

Câu 43: What was the goal of the campaign against smallpox?

B. to decrease the spread of smallpox worldwide

C. to provide mass vaccinations against smallpox worldwide

D. to initiate worldwide projects for smallpox, malaria and yellow fever at the same time

Câu 44: According to the passage, what was the strategy used to eliminate the spread of smallpox?

A. Vaccinations of entire villages B. Treatments of individual victims

Câu 45: The word “isolated” in paragraph 3 is closest in meaning to

Câu 46: How was the public motivated to help health workers?

A. By educating them B. By rewarding them for reporting cases

C. By isolating them from others D. By giving them vaccination

Câu 47: The word “they” in paragraph 3 refers to

A. officials B. health workers C. victims D. cases

Câu 48: Which statement does not refer to smallpox?

A. People are no longer vaccinated for it B. It was a serious threat

C. Previous projects had failed D. WHO mounted a worldwide campaign to eradicate the disease

Câu 49: It can be inferred that

B. malaria and yellow fever have been eliminated.

C. smallpox victims no longer die when they contact the disease.

D. smallpox is not transmitted from one person to another.

Câu 50: When was the formal announcement made that smallpox had been eradicated?

A. 1980 B. 1966 C. 1978 D. 1976