一、答案
| 1 | 2 | 3 | 4 | 5 |
| C | D | C | B | C |
二、答案
1. the oldest
2. more difficult
3. best
4. times
5. taller
三、答案
1. weighs about 5 ,000 kilos
2. many times more than
3. live up to
4. At birth/When born
四、答案
1. The orangutan is 100 cm tall, and it weighs 60 kilos. It eats 5 kilos of fruits a day.
The panda is 150 cm tall, and it weighs 100 kilos. It eats 10 kilos of bamboo a day.
2. much taller/much heavier; more than; much more; much less
五、答案
(1) free
(2) sounds
(3) heavy
(4) tall
(5) food/bamboo