四、语法填空。
Lin Wei is a panda keeper. He prepares milk 15. baby pandas every day. In his mind, pandas are 16. (cute) animals in the world.
Scientists say there are now 17. (few) than 2,000 pandas living in forests. And a small number of pandas live in zoos or research centres in different 18. (country). Pandas do not have many babies, maybe only one every two years. The babies are very weak. They often die of illnesses 19. they can not live very long. Many years ago, there were a lot 20. (many) bamboo forests and pandas in China. However, people 21. (start) to cut down trees for farming later. So pandas can't find enough food 22. (eat) and have fewer babies.
23. programme in Chengdu teaches children about endangered animals like pandas. It helps 24. (they) learn about the importance of saving these animals.
In a word, animals are our good friends and we should try our best to protect them.

15. for
16. the cutest
17. fewer
18. countries
19. and
20. more
21. started
22. to eat
23. A
24. them

15. 考查固定搭配prepare sth. for sb.，意为“为某人准备某物”，此处指为熊猫幼崽准备牛奶，故填for。
16. 考查形容词最高级，由范围"in the world"可知此处要表达“世界上最可爱的动物”，cute的最高级为the cutest。
17. 考查形容词比较级，由标志词than可知此处要用few的比较级fewer，fewer than意为“少于”。
18. 考查名词复数，different后接可数名词复数形式，country的复数变化为变y为i加es，即countries。
19. 考查连词，前后两个分句“它们经常死于疾病”和“它们活不长久”是顺承并列关系，用and连接。
20. 考查形容词比较级，a lot可用来修饰比较级表示程度加深，此处表示“多得多的竹林”，many的比较级为more。
21. 考查动词时态，时间状语Many years ago表示过去的时间，句子用一般过去时，start的过去式为started。
22. 考查非谓语动词，固定结构enough sth. to do sth. 表示“足够的某物用来做某事”，此处用不定式to eat作后置定语修饰food。
23. 考查冠词，此处泛指“一个项目”，programme是以辅音音素开头的单数可数名词，用不定冠词A，句首首字母大写。
24. 考查人称代词，动词helps后面要接人称代词的宾格形式作宾语，they的宾格是them。