【正确答案】 A

【答案解析】A new species of snake has been discovered on a remote island in the Bahamas. 　　Scientists identified 20 of the one meter-long snakes during two trips to the Caribbean islands. The second trip was made in October last year. 　　One of the creatures made a dramatic appearance by moving on to the head of the team leader as he slept. 　　The snake has been named silver boa because it is metallic colored and the first specimen found was climbing a silver palm tree. 　　The team was led by Dr. Graham Reynolds, from Harvard University, the scientist confirmed the snake was a previously unknown species after conducting a genetic analysis of tissue samples. 　　Commenting on the find, snake expert Robert Henderson from the Museum of Natural History, said: “Worldwide new species of frogs are being discovered and described quite regularity. New species of snakes, however, are much rarer. What is the news report mainly about?

【正确答案】 C

【答案解析】What do we learn about the scientific team leader?

【正确答案】 D

【答案解析】How did the newly discovered creature get its name?