9. What do they decide to do this Friday night?
A. Work and exercise. B. Exercise and listen to the radio.
C. Exercise and have dinner.
Text Five
8. When does Laura usually go to Silver Gym?
A. On Friday. B. On Saturday. C. On Sunday.
7. Where is Simon on Tuesday evening?
A. At school. B. At Cesar’s. C. In the Silver Gym.
6. What do we know about the man now?
A. He runs a restaurant.
B. His original dream has come true.
C. He works far away from his hometown.
Text Four
5. Why did the man change his mind?
A. He found cooking interesting.
B. He couldn’t find a job at college in his hometown.
C. He didn’t like history any more.
4. How does the man feel about the woman?
A. He’s upset with her. B. He is sorry for her. C. He forgives her.
Text Three
3. What did the woman plan to do on Saturday?
A. Help the man study physics.
B. Meet with her cousin at the airport.
C. Take her mother to the hospital.
2. Why does the man run to see Wang Fang?
A. He doesn’t like her new hairstyle.
B. He cannot wait to see her new look.
C. He won’t know her.
Text Two
1. Which of the following about Wang Fang’s previous appearance is TRUE?
A. Straight-haired. B. Fat. C. Tall.
21.(本小题满分13分)
已知数列满足:,,记(n∈N*),为数列的前n项和.
(Ⅰ)证明数列为等比数列,并求其通项公式;
(Ⅱ)若对任意n∈N*且n≥2,不等式恒成立,求实数的取值范围;
(Ⅲ)令,证明:(n∈N*).
[解](Ⅰ)因为,由已知可得,
.(3分)
又,则. (4分)
所以数列是首项和公比都为的等比数列,故. (5分)
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