Kitesurfing as a water sport began in the 1980s, but didn't get popular until the end of last century. It is also known as kiteboarding, and in some European countries as flysurfing. Kitesurfing works through wind power(动力) by using a large kite to pull a rider on the water at high speed.

　 At first, kitesurfing was a difficult and dangerous sport. Now it is becoming easier and safer because of the safer kite design. For an able and strong person, kitesurfing can be a very fun, extremely exciting sport, just like skating on the water with a feeling of flying. It has become more and more popular.

　 Compared with other water sports, kitesurfing is easier to learn. A beginner can understand how to operate the kite with 5—10 hours of training. And anybody aged from 13 to 65 can learn. It is not expensive to get the equipment for kitesurfing, which costs $1,000 to $2,500. Training lessons range from $200 to $500 for two or three hours. With the development of its equipment progress, kitesurfing is becoming even safer. After some training, you can enjoy its excitement and challenging feeling.

　 With the rising popularity of kitesurfing, most major seaside cities have kitesurfing clubs. In China, Xiamen is the only place that has the kitesurfing club, which provides professional kitesurfing training and equipments.

50. Kitesurfing has a history of about 　　 years.

　 A. 30 　　　　 B. 50 　　　　　　 C. 100 　　　　　 D. 130

51. 　　 is mentioned in the passage as the power of kitesurfing.

　 A. Water　　　 B. Wind 　　　　　 C. The sun 　　　 D. The kite

52. The underlined word “range” in the third paragraph means “　　　　　 ” in Chinese.

A. 在……范围内变动　　　　　　 B. 按……顺序排列

C. 向……方向延伸　　　　　　　　 D. 根据……归类

53. The main idea of this passage is about .　　　　　 .

A. the way of operating kitesurfing

B. the progress of kitesurfing equipment

C. the history of kitesurfing in China

D. the development of kitesurfing

内容提示：李平和张新正在观看男子100米决赛，李平认为一班选手取胜的可能性较大，其他三个班的选手也不能低估。比赛结果出乎意料，2班的选手最先冲过终点线，全场为之欢呼。

根据中文提示，完成下列对话，每空一词.

Li Ping： Who will 　1 　 the boys' 100-metre race?

Zhang Xing： I'm not 　　 　2 　. Maybe Class 1 will win the race. Its runner is 　3 　the school team and got first last year in our school.

Li Ping： But Class 4 can run very fast, so 　　 　4 　Class 2 and Class 3. It's 　　 　5 　to say who will be the winner. Let's watch the race.

Zhang Xing： Look! All the runners are 　　 　6 　the starting line. Oh, they rush out（冲出来）.

Li Ping： How fast! Class 1 is in 　　 　7 　only a little, but the other three are almost 　　 　8 　and neck behind. Oh, the runner of class 2 runs ahead（在前）. He runs faster and faster. Great! Class 2 wins.

Zhang Xing： Well 　　 　　 　9 　, everyone! 　　 　　 　10 　to the winner.