单项选择题

After he had finished the blueprint of the project, he____________ it to the committee for approval.

A．admitted
B．submitted
C．to be treated
D．must be treated
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单项选择题
They began to sail around the world single-handed at _________ the same age, but their results were quite different.
A．approximately
B．appropriately
C．closely
D．similarly
单项选择题
A．unlessB．untilC．whenD．after
A．unless
B．until
C．when
D．after
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