V . Fill in the blanks with proper prepositions. (介词填空) (10%) 1. Their achievements have a great effect ______ our lives. 2. After the discovery ________ the tombs, they set out to do research on them. 3. Teenagers are discouaged _________ smoking and drinking. 4. When hearing ______ his success, all of us felt proud of him. 5. The teacher told him to stand outside the classroom ______ a punishment for being late. 6. Who do you think is fit _______ this important task? 7. Tom is decribed by his classmates _______ hard-working and intelligent. 8. Yang Liwei’s name will go down ______ history with Yuri Gagarin. 9. After he visited the tomb, he fell ill ______ a high fever and died the next day. 10. Nowadays when scientists examine mummies, they wear special clothing _____ protection.