1. (2021九上·温岭月考) 阅读理解

①The world has been troubled by COVID-19 for over a year. A recent report may help us understand more about it. On March 30, the World Health Organization (WHO) worked out a report on the global tracing of origins(溯源) of COVID-9.

②The report followed a WHO study that was done with the help of China. A total of 34 experts from the WHO and China did research from Jan. 14 to Feb. 10 in Wuhan.

③In the report, the WHO says that it is "extremely unlikely(极不可能)" that the origin

was a leak(泄露) from a lab. In 2020, there were rumors(谣言) saying that COVID-19 came from a lab in Wuhan, but this is not true.

④The WHO pointed out that it is "very likely" that humans got COVID-19 from at least two animal species. And it is "possible" that the introduction of the virus was through cold food chain products(冷链食物).

⑤The research noted that the Huanan seafood market was not the original source of the COVID-9 outbreak. They found some suspected(疑似的) positive samples（阳性病例）that dated back even earlier than the first case in Wuhan.

⑥As for the future, experts said there is still a lot of work to do. They will do more research to find out whether the virus was spreading in Europe early in 2019. They will also test wildlife and other animals in the place for signs of the virus.

⑦This joint(联合) research will provide a scientific guide for the human race to better understand the virus, said Chen Xu, head of the Chinese Mission to the United Nations.

1. （1） According to the report, ________________.

   A . COVID-19 came from two animal species B . the first case of COVID-19 was found in Europe C . it is "extremely unlikely" that COVID-19 originated from a lab D . cold food chain products can easily spread the virus
3. （2） What might the experts do next?

   a. They will study more animals to trace the origins of the virus.

   b. They will do more research in Europe.

   c. They will focus more on how to stop the pandemic (大流行).

   d. They will study how the virus spread so widely.

   A . ab B . bc C . cd D . bd
5. （3） The experts traced the origins of COVID-19 to ________________.

   A . end the long-lasting pandemic B . end rumors that the virus came from a lab C . help people better understand the virus D . find out which country the virus came from
7. （4） The structure of the passage might be _________.

   A . B . C . D .