He concentrated on the research of the endangered animals, and gradually got used to the hard life on the island.
单项选择题Why do you think they had not a backup computer
单项选择题We can conclude from the passage that ______.
单项选择题Arctic explorers may catch colds when ______.
单项选择题Which of the following is NOT true according to the text().
A. The Norwegians were willing to offer all help. B. It was not believed that there were many unclear weapons inside the Kursk. C. A team of divers from Norway entered the submarine Kursk successfully on Oct. 25. D. It’s reported that a major collision was unlikely to cause the sinking of the Kursk.
单项选择题A study was carried out by Britain’s NCC to______.