单项选择题

During the period of economic recession, daily necessities were in short supply and had to be ______.

A．rationed
B．separated
C．assigned
D．designated
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单项选择题
No matter what he said to you, his manner showed an ______ that he did not actually agree with the proposal.
A．objection
B．implication
C．enlightenment
D．approach
单项选择题
The problem ______ serious moral and ethical dilemmas much more worthy of consideration than those of genetic engineering and the like.
A．probes
B．poses
C．exposes
D．deports
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