There are many places to go on safari(观赏野生动物)in Africa, but riding a horse through the flooded waters of Botswana's Okavango Delta must rank as one of the world's most exciting wildlife journeys.

Several safari camps operate as the base for this adventure, providing unique rides twice a day to explore deep into the delta. The camps have excellent horses, professional guides and lots of support workers. They have a reputation for providing a great riding experience.

The morning ride, when the guides take you to beautiful, shallow lakes full of water lilies, tends to be more active. It is unlike any other riding experience. With rainbows forming in the splashing water around you and the sound of huge drops of water bouncing off your body and face. It is truly exciting. You are very likely to come across large wild animals, too. On horseback it is possible to get quite close to elephants, giraffes and many other animals. The sense of excitement and tension levels rise suddenly though, as does your heart rate, as you move closer to them.

In the evening, rides are usually at a more relaxed and unhurried pace. With golden light streaming across the grassy delta and the animals coming out to eat and drink. Sedate though they are, rides at this time of day are still very impressive. As the sun's rays pass through the dust kicked up by the horses, the romance of Africa comes to life.

Back at the camp you can kick off your boots and enjoy excellent food and wine. Looking back on your day, you will find it hard to deny that a horseback safari is as close as you will ever come to answering the call of the wild.

1.What does the underlined word “They” refer to?

A Flooded waters.

B Wildlife journeys.

C Safari camps.

D Unique rides.

解析：选C。C 词义猜测。根据第二段提到几个Safari的野营有优秀的马匹，专业的指导和许多人服务工作，故可知这些野营的声望是很好的，故选C项。

2.What does the author find most exciting about a horse safari?

A Seeing and feeling the real African life.

B Enjoying good food and wine at the camp.

C Hunting large animals just as our ancestors did.

D Being part of the scene and getting close to animals.

解析：选D。D 细节理解题。根据第三段提到The sense of excitement and tension levels rise suddenly though, as does your heart rate, as you move closer to them骑马的紧张与兴奋让人心跳加速，与他们更亲近，故选D项。

3.What does the underlined word “sedate” probably mean?

A Wild and romantic.

B Slow and peaceful.

C Hungry and thirsty.

D Active and excited.

解析：选B。B 词义推测题。根据rides are usually at a more relaxed and unhurried pace.和上一句，动物出来吃食和喝水，可知，选择B。

4.The author introduces the riding experience in the OKavango Delta mainly by _________.

A following space order

B following time order

C making classifications

D giving examples

解析：选B。B 文章结构题。整篇文章是根据在非洲观赏野生动物的时间顺序组织的。故选B项。