Ⅰ 根据句意或提示完成句子。
1. A butterfly has two pairs of colorful w that help it fly from flower to flower.
2. A r is a kind of flower. It has a beautiful smell and many sharp thorns (刺,荆棘) on its stem to protect itself.
3. F free to ask questions if you don't understand something about plants and animals. Learning is all about curiosity.

1. wings 2. rose 3. Feel

1. 由"butterfly"（蝴蝶）和"help it fly"（帮助它飞）可知，此处应填"翅膀"，two pairs of后接名词复数，故填wings。
2. 由"flower"（花）和"sharp thorns on its stem"（茎上有尖刺）可知，此处指"玫瑰"，a后接名词单数，故填rose。
3. "Feel free to do sth."为固定搭配，意为"随意做某事"，句首首字母大写，故填Feel。

1. The flower the most beautiful in the garden.
2. the tree in the forest?
3. This plant is the .
4. It may be the animal in the world.
5.

1. isn't the
2. Is; tallest
3. most interesting
4. most beautiful
5. I think the tiger is the most dangerous animal.

Ⅲ 语法选择。
Welcome to the Blue Sky Zoo! Let's take a look at some amazing animals here.
First, let's see the giraffes. The giraffes are from Africa. They have the 1______ necks of all animals. They use their long necks to reach leaves on tall trees.Then, let's see the elephants .The elephants are from Asia and Africa. They are the largest land animals in the world. They have big ears and strong trunks that they use to 2______ up food and water. Next, we can see the cheetahs. The cheetahs are from Africa. They are the fast land animals. They can run up to 60 miles per hour! The penguins live 3______ Antarctica. They can't fly, but they are excellent 4______ in the water.
Besides, we can see pandas. The pandas are from China. Many people love to see 5______ because they are so cute and gentle. The lions are from Africa. They have beautiful manes and they are very strong.The monkeys are from South America. They like to jump around and play with each other. They are the most 6______ animals in the zoo.
Moreover, let's see the crocodiles (鳄鱼). The crocodiles are from Africa. They have sharp teeth and powerful jaws (爪子). They are the 7______ reptiles (爬行动物) in the world.The kangaroos are from Australia. They have strong legs that help them 8______ long distances (距离). The snakes are from Africa. Many people are afraid of snakes because they can be 9______.You can see many other interesting animals at the Blue Sky Zoo. Come and visit us to learn more about 10______ animal kingdom!
1. A. long B. longer C. longest
2. A. pick B. picks C. picking
3. A. in B. at C. from
4. A. swimmers B. swim C. swims
5. A. they B. them C. their
6. A. actor B. active C. activity
7. A. largest B. large C. larger
8. A. jumper B. jump C. jumps
9. A. danger B. dangers C. dangerous
10. A. the B. an C. a

1. C
2. A
3. A
4. A
5. B
6. B
7. A
8. B
9. C
10. A

1. 题目中提到长颈鹿的脖子是所有动物中最长的，需要用最高级形式，故选择C。
2. “use sth. to do sth.”为固定搭配，表示“用某物做某事”，故选择A。
3. “live in”表示居住在某地，为固定搭配，故选择A。
4. “excellent”为形容词，后接名词，且根据句意应为复数，故选择A。
5. “see”为动词，后接宾格代词，故选择B。
6. 根据句意，此处应为形容词，表示活跃的，故选择B。
7. 题目中提到鳄鱼是世界上最大的爬行动物，需要用最高级形式，故选择A。
8. “help sb. (to) do sth.”为固定搭配，表示帮助某人做某事，故选择B。
9. “be”为系动词，后接形容词，故选择C。
10. “animal kingdom”为特指，故用定冠词“the”，选择A。