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【单选题】
What are generally considered to be the three components of sustainable development?
A.
Design
B.
Energy, water, and biodiversity
C.
Society, economy, and environment
D.
Social, economic, and spiritual awareness
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【单选题】The Parallel Flow of Three Rivers was listed in the ______ by UNESCO.
A.
World Geo-park
B.
World Record Heritage
C.
World Cultural Heritage
D.
World Natural Heritage
【单选题】What is the Montreal Protocol?
A.
A Free trade agreement between the USA and Canada
B.
An international directive on how to conserve endangered species
C.
An international treaty designed to protect the ozone layer
D.
An international agreement designed to reduce GHG emissions
【单选题】Why was the gorge named by "Tiger-Leaping" ?
A.
A tiger was hunted here.
B.
Tigers could jumpe over the gorge directly.
C.
A rock in the river provided a spot for a tiger to jump across the river.
D.
Rocks in the gorge look like tigers.
【单选题】How old is the Earth?
A.
1 billion years
B.
180,000 years
C.
4.5 billion years
D.
3 million years
【单选题】In Yunnan, the upstream of the Yangzi River is called the ______
A.
Nu River
B.
Nanpan River
C.
Jinsha River
D.
Yuanjiang River