第一节 （共 15 小题；每小题 2 分，满分 30 分）
阅读下列短文，从每题所给的 A、B、C 和 D 四个选项中，选出最佳选项。
A
Design your own adventure spent at IZE’s Blue Creek Field Station by choosing two activities per day from the list below.
Short Cave Hike: 2-hour activity where you will be exposed to the ultimate tropical rainforest experience. At every turn along the trail, a novel experience awaits. Perhaps it’s a trail of leaf cutter ants or a delicate tree snake. You will follow your Maya Guides up a steep incline(斜坡) to the entrance of one of the most spectacular limestone caves in Belize.
Ethnobotany Walk: 3-hour activity where you will explore the medical and cookery uses of the local herbs, plants and trees. The Mayans were masters in using the jungle’s natural resources for their
medical needs. You will learn about the vines（藤蔓） that store drinking water and other remarkable remedies (疗法) that nature offers. You will get a first-hand look at the crops the Maya harvest such as cocoa, mango, rice, beans, etc.
Hokeb Ha Cave Hike: Spend time in one of the most spectacular limestone caves in Belize. The name of this cave means “where the water enters the earth.” Stalactites (钟乳石) hang from the ceiling, and colonies of bats live in the darkest gaps. You can also search for Mayan artifacts over 1，000 years old.
Lizard Hike: 2-4 hour activity where you will swim and hike along the clear blue river as you look for lizards in the tall trees. Can you identify which species？Is it the spectacular dinosaur that looks like green lizards? Belize is home to many of the 3,800 species of lizards in the world!
21. During the short Cave Hike, you .
A. will be lost in the tropical forest
B. may enjoy unexpected views on the way
C. can be bitten by the tree snakes occasionally
D. need to follow the track of ants in the forests
22. What activity can improve your skills of living in the wild?
A. Ethnobotany Walk. B. Short Cave Hike.
C. Lizard Hike. D. Hokeb Ha Cave Hike.
23. We can infer that Hokeb Ha Cave might be .
A. the source of the water on the Earth B. the habitat of bats in Belize
C. the entrance to the earth D. home to ancient Mayans