单项选择题

According to the latest report, consumer confidence ______ a breathtaking 15 points last month, to its lowest level in 9 years.

A．soared
B．mutated
C．plummeted
D．fluctuated
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单项选择题
The ______ emphasis on examinations is by far the worst form of competition in schools.
A．negligent
B．edible
C．fabulous
D．disproportionate
单项选择题
Some scientists have suggested that Earth is a kind of zoo or wildlife ______ for intelligent space beings, like the wilderness areas we have set up on earth to allow animals to develop naturally while we observe them.
A．conservation
B．maintenance
C．storage
D．reserve
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