单项选择题

A．He is not equal to the job.
B．He doesn’’t think the job is challenging enough.
C．He is not well paid for his work.
D．He cannot keep his mind on his work.
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单项选择题
By saying With Mars the scientific stakes are arguably higher than they have ever been ( Line 1, Para. 4 ), the author means that ___________.
A．with Mars the risks involved are much greater than any previous space ventures
B．in the case of Mars, the rewards of scientific exploration can be very high
C．in the case of Mars, much more research funds are needed than ever before
D．with Mars scientists argue, the fundamental interests of science are at issue
单项选择题
A．At the airport.B．In a travel agency.C．In a hotel.D．At the reception desk.
A．At the airport.
B．In a travel agency.
C．In a hotel.
D．At the reception desk.
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