单项选择题
A.when B.since C.after D.as
The troops have been on the()for a possible enemy at ta...
单项选择题The troops have been on the()for a possible enemy at tack.
A.alarm B.alert C.warning D.notice
Some philosophers insist that one way to()knowledge is ...
单项选择题Some philosophers insist that one way to()knowledge is through an empirical approach.
A.disseminate B.classify C.test D.acquire
Until the final votes are cast, though, assurances()for...
单项选择题Until the final votes are cast, though, assurances()for nothing.
A.count B.meant C.give D.account