单选题
下面的短文后列出了7个句子,请根据短文的内容对每个句子做出判断:如果该句提的是正确信息,请选择A:如果该句提的是错误信息,请选择B:如果该句的信息文中没有提及,请选择C。
The Spanish Flu Epidemic

If you're worried about the possibility of a coming bird flu epidemic, you can take comfort in the fact that humanity has survived a similar influenza epidemic in the past. Starting its rounds at the end of World War I, the 1918 flu killed an estimated 50 million people.
Popularly known as the Spanish Flu, this type of influenza was far worse than your common cold. Normally, influenza only kills those who are more vulnerable to disease, such as newborns, the old or the sick. However, the Spanish Flu was prone to killing the young and healthy. Often it would disable its victims in hours; within a day, they would be dead, typically from extreme cases of pneumonia (肺炎).
The Spanish Flu was quite nasty-fast-spreading and deadly. It managed to spread across the globe, devastating the world. Then suddenly, after two years ravaging(蹂躏)the Earth, it disappeared as quickly as it had arisen.
Despite its nickname, the Spanish Flu did not originate in Spain. Its true origins are unknown. Some believe it started in US forts and then spread to Europe as America joined the war; others think that it populated the trenches of the English and the French and eventually broke out in 1918. Regardless of where it started, eventually a fifth of the world population suffered the disease, with a global mortality rate(死亡率) estimated at 2.5% of the population.
Modernity was partly to blame for the quick spread of the disease. It passed throughout the world on trade routes and shipping lines. It hit Northern America, Europe, Asia, Africa and the South Pacific. The war did not help at all--the movement of supplies and troops aided the spread of the Spanish Flu, as well as the trench warfare. Imagine the speed at which a virus can spread in a crowded ditch. The fast emergence of the virus in the trenches caused some soldiers to believe that the Spanish Flu was a new form of biological warfare.
Luckily, the Spanish Flu simply vanished by 1920. It is believed the flu simply ran out of fuel to spread.
单选题 The Spanish Flu started during World War Ⅰ.
【正确答案】 A
【答案解析】[解析] 第一段最后一句话告诉我们流感开始于第一次世界大战末。
单选题 The Spanish Flu posed a greater threat to the old and the sick.
【正确答案】 B
【答案解析】[解析] 从第二段第三句“However, the Spanish Flu was prone to killing the young and healthy.”可知西班牙流感威胁的是年轻人和健康人群。
单选题 As the Spanish Flu was spreading, people in Australia were worried.
【正确答案】 C
【答案解析】[解析] 文章并未提及澳大利亚人对流感的担心。
单选题 The Spanish Flu disappeared two years after it broke out.
【正确答案】 A
【答案解析】[解析] 第三段最后一句“Then suddenly, after two years ravaging(蹂躏)the Earth, it disappeared as quickly as it had arisen.”告诉我们两年后西班牙流感就迅速消失了。
单选题 The Spanish Flu was named after the place where it started.
【正确答案】 B
【答案解析】[解析] 第四段第一句“Despite its nickname, the Spanish Flu did not originate in Spain.”提到它的发源地并不是西班牙。
单选题 About half of the people in the world suffered from the Spanish Flu.
【正确答案】 B
【答案解析】[解析] 第四段最后提到“…eventually a fifth of the world population suffered the disease…”,即有五分之一的人感染上了这种流感。
单选题 Biological warfare originated in the 20th century.
【正确答案】 C
【答案解析】[解析] 倒数第二段只是讲战壕里迅速出现的病毒让一些士兵认为西班牙流感是一种新型的生物战争,并未提及生物战争真正起源的时间。