风险追求者选择资产的态度是:当预期收益率相同时,偏好于具有低风险的资产;而对于具有同样风险的资产,则钟情于具有高预期收益率的资产。 ()
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Besides the main missions stipulated by NASA, the orbiter would also be used as
A. a space hospital.
B. a medical research center.
C. a medicine-transporting vehicle.
D. a space ambulance.
From the passage we know that the design of the orbiter indicates
A. NASA's determination to continue its space exploration projects.
B. the US space technology superiorities.
C. a victory in space exploration.
D. the birth of an absolutely safe space craft.
Full exposure to the language spoken during the first years of life partly ensures the child's success of learning his mother tongue.
A. Right
B. Wrong
C. Not mentioned
When did the scientists start working on a successor to the shuttle?
A. Immediately after the Columbia disaster.
B. One year after the Columbia disaster.
C. Years before the explosion of Columbia.
D. Not mentioned in the passage.