2025届高三英语一轮复习：VOA话题禽流感在美爆发七选五专项练习（含答案）

Passage1: The Bird Flu Outbreak in the US
The bird flu outbreak has become a significant concern in the United States. California's declaration of a state of emergency signals the severity of the situation. ① _. This virus, known as Type A H5N1, has spread widely among various species.
The spread of the bird flu is not limited to birds. It has also affected milk cows in California and caused illnesses in people in other states. ② _. Since its identification in U.S. milk cows in March, it has been detected in about one - third of U.S. states.
Most of the illnesses related to the bird flu have been mild. However, a severe case was reported in Louisiana. ③ _. The person, who is over 65 and has other health problems, showed severe breathing problems after being near sick birds.
The CDC emphasizes that the public has a low risk of getting the virus. There is no evidence of person - to - person infection. ④ _. Some experts worry that flu viruses' continuous mutation could change the situation.
People in contact with dairy cows, commercial poultry, or backyard birds are at higher risk. ⑤ _. Also, the H5N1 virus can be present in raw milk, so avoiding raw milk is crucial.
A. The virus has spread among wild birds, farm birds, and many mammals.
B. The state took this step to enable quicker action by state workers.
C. But the situation might change as viruses are constantly mutating.
D. This is the first confirmed case connected with backyard birds in the U.S.
E. The virus is only dangerous to certain species.
F. They should use breathing, eye, and hand protection.
G. The number of cases is decreasing rapidly.
答案
B
解析：前文提到加州宣布进入紧急状态，B 选项 “该州采取这一步骤是为了让州工作人员能够更快采取行动”，解释了宣布紧急状态的目的，与前文紧密相连。
A
解析：上文说禽流感传播不限于鸟类，还影响奶牛和人类，A 选项 “该病毒已在野生鸟类、农场鸟类和许多哺乳动物中传播”，进一步说明病毒传播范围，符合语境。
D
解析：前文提及路易斯安那州出现严重病例，D 选项 “这是美国首例与后院鸟类有关的确诊病例”，与后文对该病例的描述相呼应。
C
解析：前文表明公众感染风险低且无人际传播证据，后文提到专家担心病毒变异改变情况，C 选项 “但随着病毒不断变异，情况可能会改变”，起到承上启下的作用。
F
解析：前文指出与特定动物接触的人风险更高，F 选项 “他们应该使用呼吸、眼睛和手部防护措施”，给出了相应的防护建议，符合逻辑。
Passage 2: Understanding the Bird Flu Crisis in the US
The bird flu situation in the United States is a matter of great concern. California's state of emergency due to bird flu is a clear indication of its seriousness. ① _. The avian influenza virus, Type A H5N1, has been spreading far and wide.
The virus has had a broad impact. It's affecting milk cows in California and has made some people ill in other states. ② _. The spread among different species is a cause for worry.
Although most illnesses are mild, a severe case in Louisiana stands out. ③ _. This case has drawn attention to the potential danger of the virus.
The CDC has been closely monitoring the situation. They claim the public has a low risk of infection. ④ _. The possibility of virus mutation adds an element of uncertainty.
Those in contact with dairy cows, commercial poultry, or backyard birds need to be cautious. ⑤ _. Additionally, raw milk, which can carry the virus, should be avoided.
A. It has been found in about one - third of U.S. states since March.
B. The virus only affects animals and not humans seriously.
C. The emergency was declared to speed up the response.
D. However, experts are worried about the mutating virus.
E. The person in Louisiana had pre - existing health issues.
F. They are at a higher risk and need to take protective measures.
G. The virus will disappear soon without any special measures.
答案
C
解析：前文强调加州因禽流感进入紧急状态，C 选项 “宣布紧急状态是为了加快应对速度”，解释宣布紧急状态原因，与前文逻辑连贯。
A
解析：上文说病毒影响范围广，A 选项 “自 3 月以来，它已在美国约三分之一的州被发现”，进一步说明病毒传播范围，承接上文。
E
解析：前文提及路易斯安那州的严重病例，E 选项 “路易斯安那州的这个人有先前存在的健康问题”，补充该病例相关信息，符合语境。
D
解析：前文说 CDC 称公众感染风险低，后文提到病毒变异的不确定性，D 选项 “然而，专家们担心病毒变异”，起到转折和衔接作用。
F
解析：前文指出与特定动物接触的人需谨慎，F 选项 “他们风险更高，需要采取防护措施”，给出具体应对建议，与前文呼应。
Passage 3: Bird Flu: A Growing Concern in the US
The bird flu outbreak in the US has raised many alarms. California's decision to declare a state of emergency is a significant move. ① _. The virus, Type A H5N1, is causing widespread concern.
The bird flu has a wide - reaching impact. It not only affects wild and farm birds but also milk cows in California, and has led to illnesses in people in other states. ② _. The discovery of the virus in a large number of states is a worrying sign.
Most of the bird - flu - related illnesses have been mild, but a severe case in Louisiana is a cause for alarm. ③ _. The case shows that the virus can be dangerous.
The CDC is closely following the situation. They state that the public has a low risk of getting the virus currently. ④ _. The continuous mutation of flu viruses is a lurking threat.
People who have contact with dairy cows, commercial poultry, or backyard birds are at a higher risk. ⑤ _. Also, the risk associated with raw milk emphasizes the need for caution.
A. The virus has spread to about one - third of U.S. states since its discovery in March.
B. The emergency was declared to ensure a more effective response.
C. The person in Louisiana was an elderly with other health problems.
D. But the mutating nature of flu viruses is a concern.
E. The virus is only a short - term problem.
F. They should take precautions such as using protective gear.
G. The number of severe cases is increasing rapidly.
答案
B
解析：前文提到加州宣布紧急状态，B 选项 “宣布紧急状态是为了确保更有效的应对”，说明宣布紧急状态的意义，与前文衔接紧密。
A
解析：上文阐述禽流感影响范围，A 选项 “自 3 月发现以来，该病毒已传播到美国约三分之一的州”，具体说明病毒传播范围，符合文意。
C
解析：前文说路易斯安那州有严重病例，C 选项 “路易斯安那州的这个人是一位有其他健康问题的老年人”，详细介绍该病例情况，与前文连贯。
D
解析：前文表明 CDC 称公众目前感染风险低，后文提到病毒变异的威胁，D 选项 “但流感病毒的变异特性令人担忧”，承上启下。
F
解析：前文指出与特定动物接触的人风险高，F 选项 “他们应该采取诸如使用防护装备等预防措施”，给出应对建议，符合逻辑。