（二）
66. second
67. useful
68. better
69. environment
70. reduce
71. clean
72. freely
73. leaving
74. designed
75. fresh

第二节
1. A giant panda can grow up to 1.5 metres long and weigh up to 160kg.
2. the giant panda is chosen as its symbol
3. The area where pandas can live has become smaller.
4. Our government can increase the size of panda reserves.
5. 人们正非常努力地确保大熊猫不会灭绝。

第一节
21. C
22. A
23. C
24. C

（二）
66. second
67. useful
68. better
69. environment
70. reduce
71. clean
72. freely
73. leaving
74. designed
75. fresh

第二节
1. A giant panda can grow up to 1.5 metres long and weigh up to 160kg.
2. the giant panda is chosen as its symbol
3. The area where pandas can live has become smaller.
4. Our government can increase the size of panda reserves.
5. 人们正非常努力地确保大熊猫不会灭绝。

第一节
21. C
22. A
23. C
24. C