B
To save endangered Arctic wolves, the Beijing-based Sinogene Biotechnology Company cooperated with Harbin Polarland on cloning(克隆) the Arctic wolf. As a result, after two years of hard work, the Arctic wolf was cloned successfully. It is the first case of its kind in the world.
Born on June 10, 2022, the wolf, named Maya, is energetic and in very good health. Her donor cell(供体细胞) came from a wild female Arctic wolf from Canada. However, her oocyte(卵母细胞) was from a female dog, and her surrogate mother(代孕母体) was a beagle. The scientist chose a dog as Maya's surrogate because they are similar in genes(基因), and it's easier to succeed through cloning technology.
"This is our new try and it has been a development in protecting and producing wild and endangered animals. The birth of Maya is an important thing for the development of cloning technology and is of great value to biodiversity(生物多样性), the protection of wildlife, and the restoration(恢复) of endangered animals in the world," Mi Jidong, the company's general manager, said.
Cloning technology is a breeding method different from natural reproduction. Some gave different opinions about the cloned Arctic wolf. Sun Quanhui, a scientist from the World Animal Protection, said that cloning technology is still in the exploratory stage of research. And there are many technical and ethical(伦理) problems that need to be treated properly. Sun believed cloning should be used only for endangered wild animals whose species are dying out or whose captive populations(圈养种群) are very limited.
Maya first lived with her surrogate mother in a lab, and later she was sent to the Harbin Polarland and displayed to the public. Maya had to live by herself in the park at first because she might not be able to fit in with original Arctic wolf groups. However, it is reported that the technology of cloning Arctic wolves has gained strong value in its application.
(
B
)6. Which of the following is true about Maya according to the passage?
A. She was born in Canada.
B. She is in good condition.
C. She is the first cloned animal in China.
D. She shares similar living habits with dogs.
(
D
)7. What is the third paragraph mainly about?
A. The history of cloning technology.
B. The difficulties of keeping biodiversity.
C. Scientists' work to protect endangered animals.
D. The importance of the birth of the cloned Arctic wolf.
(
A
)8. (创新考法·情感态度)What is Sun Quanhui's attitude towards cloning technology?
A. Careful.
B. Confident.
C. Surprised.
D. negative.
(
D
)9. What can we infer from the last paragraph?
A. Maya was trained to live with wolf groups in the lab.
B. A male cloned Arctic wolf may come into the world one day.
C. Maya is popular with many visitors to Harbin Polarland.
D. Cloning technology might be used in the protection of the animal.
(
D
)10. (创新考法·篇章结构)What's the structure of the passage?
A. ①/②③/④⑤
B. ①/②③④/⑤
C. ①②/③④/⑤
D. ①/②③/④/⑤