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【单选题】
Excess reserves are equal toA.
the sum of desired reserves plus any reserves that are more than are required.
B.
actual reserves minus desired reserves.
C.
actual reserves plus desired reserves.
D.
desired reserves minus actual reserves.
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举一反三
【单选题】What do the scientists hope to do in the future?
A.
Reduce sleep. B, Control the way people feel.
B.
Control the way people perform.
C.
Both B and
【简答题】What will scientists do to make sure the poison works this time?
【单选题】在动作顺序要改变的液压系统中宜采用( )。
A.
用行程开关和电磁阀控制的顺序动作回路
B.
用行程换向阀控制的顺序动作回路
C.
用压力继电器控制的顺序动作回路
D.
用行程孔控制的顺序动作回路
【单选题】What do the scientists hope to do in the future?
A.
Reduce sleep.
B.
Control the way people feel.
C.
Control the way people perform.
D.
Both B and C
【单选题】What could dogs help scientists do with cancer?
A.
Dogs could help scientists identify cancer patients.
B.
Dogs could help scientists identify all kinds of diseases.
C.
Dogs could help scientists identify reasons for cancer.
D.
Dogs could help scientists identify markers for cancer.
【简答题】What do scientists say about the collision of an asteroid with Earth?
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