单项选择题

Turning cultivated land back into forests or pasture is a fundamental way to stem soil ______ and desertification in the long run.

A．erosion
B．depletion
C．violation
D．delusion
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单项选择题
Participants in the Shanghai Co-operation Forum ______ regional teamwork to promote investment and economic development.
A．cursed
B．echoed
C．bounced
D．hailed
单项选择题
A luxury express train jumped the tracks on a bridge in eastern India, killing at least 50 on the spot. According to the Northern Railway spokesman, the death ______ is expected to rise.
A．figure
B．toll
C．span
D．yield
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