2. 外语
  3. Tests have confirmed that four people in Wisconsin contracted the monkeypox virus after coming into close contact with pet prair

Tests have confirmed that four people in Wisconsin contracted the monkeypox virus after coming into close contact with pet prair

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问题     Tests have confirmed that four people in Wisconsin contracted the monkeypox virus after coming into close contact with pet prairie dogs, marking the【C1】______time the disease has been【C2】______in the Western Hemisphere. Fourteen more people in Wisconsin are【C3】______of suffering【C4】______the virus. Thirteen of them were around prairie dogs; the other【C5】______contracted it after handling a sick rabbit【C6】______had been around a prairie dog. It doesn’t appear anyone contract the virus from another person.
    Monkeypox has caused an【C7】______of rashes, fevers and chills in people across the upper Midwest【C8】______early May. Monkeypox is a Virus infection that is【C9】______to smallpox. The virus has been found【C10】______in west African nations and had never before been seen in Western Hemisphere. The outbreak【C11】______from a【C12】______of prairie dogs that came from a【C13】______distributors in suburban Chicago. It was there【C14】______the prairie dog may【C15】______infected【C16】______monkeypox by a Gambian rat—a rodent indigenous to African countries. The human death rate in Africa has【C17】______from 1 to 10 percent, but the virus may be【C18】______lethal in the United States, because people are typically better【C19】______and medical technology is【C20】______more advanced."
【C8】
选项 A、since
B、before
C、after
D、in
答案A
解析 根据全句时态(完成时)判断，只有since符合结构。
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