单项选择题

It can be safely ______ that there is no living beings on that planet.

A．resumed
B．assessed
C．assumed
D．assured

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单项选择题

WTO is regarded by some countries as an access to foreign markets rather than as a ______ for opening up the home market.

A．commerce
B．committee
C．commitment
D．commission

单项选择题

All of us did quite a good job but the teacher only ______ him out for praise.

A．yelled
B．singled
C．selected
D．pulled

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