The Wild Elephant Valley there is a famous nature reserve for ______.
A. endangered Asian elephants
B. endangered plants
C. precious animals
D. precious palms
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What does "photosynthesis " mean?
A. 中和作用
B. 扩散作用
C. 呼吸作用
D. 光合作用
Which ones show the "intelligence " of plants in the rainforests in Xishuangbanna?
A. One tree maks a forest
B. the parasitic orchid
C. the Garden in the Air
D. the trunk-like roots of banyans
Countless streams and brooks provide ______for local people’s water use in daily life.
A. problems
B. obstacles
C. convenience
D. all above
Lijiang is known as the “______” due to the special water network.
A. Venice
B. heritage
C. world heritage
D. Oriental Venice
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