ones ages 2 to 6. A one-year subscription (12 issues) is $40.

21. How much is a two-year subscription to a magazine launched in 1975?

A. $30. B. $34. C. $40. D. $68.

22. What is special about ChopChop?

A. It has a history of 42 years. B. It has nine cartoon characters.

C. It is helpful for kids to learn to cook. D. It includes a question-and-answer page.

23. What topic do Muse and Highlights have in common?

A. Science. B. Craft projects. C. Riddles. D. Animals.

　　Famous tennis coach Nick Bollettieri considered tennis star Roger Federer the greatest player of all time, saying he is "in a class of his own". The Swiss mastro (大师) won his record eighth Wimbledon title this month, defeating Croatian Marin Cilic in the final, and going to the entire tournament without dropping a single set.

　　The 36-year-old now has 19 Grand Slam titles, the most in history for a male tennis player. Bollettieri coached some the most successful tennis player ever, including Andre Agassi and Jim Corurier, believes Federer stands out from the rest due to all the efforts he makes on and off the court. "When you get to know the greatest player of all time, I believe you will join with many commentators in saying Roger is standing in a class of his own," Bollettieri told Saturday Sport. "He is magnificent in expecting what to do. He has improved his backhand and also he is hitting the ball much earlier, and he is one of the best placement servers (发球员) in the game."

　　His management team headed by Tony Godsick takes care of his mind and body, time with his family, time with his foundation and time with rest. He also respects the game and his opponents. Despite his impressive record, Federer has struggled against the other top players of this generation, including Rafael Nadal and Novak Djokovic. Along with Andy Murray, they are known as tennis "big four", and Federer has a combined 50-57 record against the other three during his career.

　　However, Bollettieri doesn't think that will have any impact on Federer's greatness if he keeps on playing the way he is at his age. Bollettieri said, "Age is only a number. It is how you feel inside you. I believe a lot of people today can do a lot better if their mind set is to say I will get better every day and never use the word 'retirement'. When you worry about losing, it is more difficult to win."

24. What does Bollettieri mean by saying he is" in a class of his own"?

A. Roger is a tennis player second to none.

B. Roger is a particular favorite of his.

C. Roger is proud and prefers being alone.

D. Roger has difficulty getting along with others.

25. What can we know about Roger from the passage?

A. He is in full charge of his life and career.

B. Hard work is a major factor in his success.

C. Deep respect develops between him and Tony.

D. His greatest achievement is made in his thirties.