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【单选题】
( )以来，我国逐步形成了一个比较完整的对外贸易法律制度。A.
20世纪80年代
B.
20世纪90年代
C.
21世纪
D.
建国初期
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【单选题】The worker wasn't on duty that night. He shouldn't _____ the accident. [ ]
A.
see to
B.
see at
C.
see for
D.
see from
【单选题】The worker hunted for jobs in New York for months, ____he could not find any work.
A.
and
B.
or
C.
yet
D.
nor
【简答题】What did Albert Einstein do in the Patent Office? Why couldn't he afford to skip a day?
【简答题】CDR即为( )
【单选题】• Bell was nearly beaten to the patent office by (), who had independently developed a very similar telephone invention . A. Gray B. Morse C. Charles D. Reis
A.
Gray
B.
Morse
C.
Charles
D.
Reis
【简答题】____ granted bythe Patent Office, it becomes the inventor’s property and he or she can keepit, sell it, or assign it.A. Once a patent is B. When a patent C. A patent, once D. A patent, whenever it
is
【判断题】To obtain a patent, a person must prove to the patent office that his or her invention is novel, useful, and not obvious in light of contemporary technology.
A.
正确
B.
错误
【单选题】He wrote his first science papers while ______ in the patent office in Bern, Switzerland.
A.
work
B.
to work
C.
working
D.
worked
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