一、Look and compare. (看一看，比一比。)
Dudu 所在的自然观察小组在森林公园里测量树木的高度。请你根据图片和测量结果，从方框中选择单词补全句子。
shorter, taller, older, the tallest

1. Tree A is (short) than Tree B.
2. Tree D is (tall) of all.
3. Tree D is 4 meters (tall) than Tree C.
4. Tree C is (old) than Tree B.

1. shorter
2. the tallest
3. taller
4. older

二、Read and compare.(读一读，比一比。)
观察小组来到了动物园，他们记录了几种动物的身高数据，请你帮助他们将图片和句子进行匹配，并将答案填在题前括号内。

()1. The fox is taller than the panda.
()2. The fox is shorter than the panda.

1. B
2. A

三、Think and do. (想一想,做一做。)
观察小组里的成员 Lulu 和 Tingting 在湖边观察鸟类,他们在讨论小河里的动物。
请阅读对话从以下任务中任选 1~2 项完成。
任务一:请根据情境及图片信息,选择合适的句子补全对话,并将正确答案的字母
序号写在横线上。
A. Which one has a longer neck?
B. The swan has shorter legs.
C. They are both white.
D. No, it isn't.
Lulu: Look at the beautiful swan(天鹅) and the crane(鹤). 1.

Tingting: The crane has a longer neck.
Lulu: Which one has shorter legs?
Tingting: 2.
Lulu: Is the swan's neck straight?
Tingting: 3. It's curved(弯的).
Lulu: Yes! 4.
Tingting: That's right.
任务二:Read and judge.(读一读,判一判。)
()1. The swan has longer legs than the crane.
()2. The crane is fatter than the swan.

任务一:1. A
2. B
3. D
4. C
任务二:1. F
2. F