单项选择题

Each year there are changes () different parts of the world.

A. on
B. for
C. in
D. under
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单项选择题
The organization suggested a renewed campaign () to raise production and stimulate employment.
A. proposal
B. plan
C. scheme
D. movement
单项选择题
Many people regard death as an illness that should be cured, () others equate it with a calamity that one should try to avoid.
A. while
B. which
C. when
D. so
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