【单选题】—How long _______it _______ you to work out such a difficult problem? —About thirty minutes.
【简答题】A.How most mathematicians work. B.Accidental discovery about the earth's shape. C.How to track an orbit. D.How astronauts use computers to measure the size of satellite.
【单选题】—________ did you work for this company? —About 10 years. [ ]
【简答题】How does the author feel about his work? [A] It is boring. [B] He is happy with his work. [C] He doesn't want to stay in his work place.
【单选题】How does the author feel about his work? 查看材料
B.
He is happy with his work.
C.
He doesn't want to stay in his work place.