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How many more decades will have to pass ______ scientists succeed in providing a cure for

A. when
B. before
C. since
D. until

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A．In cold zones.B．In hot zones.C．In temperate zones.D．Any climate.

A. In cold zones.
B. In hot zones.
C. In temperate zones.
D. Any climate.

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A．Chinese is as difficult to learn as English.B．For women it may not be so difficult t

A. Chinese is as difficult to learn as English.
B. For women it may not be so difficult to learn.
C. It is the most difficult language in the world .
D. It is difficult to learn.

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加班工资也应计入工资总额。()

A. 正确
B. 错误

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题6～8：某钢筋混凝土框架，计算简图如图3-2所示，梁的刚度EI=∞。建筑的场地类别为Ⅱ类，抗震设防烈度8度，设计地震分组为第三组，设计基本地震加速度为0.20g，结构阻尼比ξ=0.05。
已知该榀框架的第一、第二振型自振周期T1=1.1s，T2=0.35s。试问，在多遇地震下，对应于第一、第二振型的地震影响系数α1、α2，分别与下列哪一组数值最为接近？

A. 0.07，0.14
B. 0.07，0.12
C. 0.08，0.12
D. 0.16，0.07

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How many more decades will have to pass ______ scientists succeed in providing a cure for

A. when B. before C. since D. until

A．In cold zones.B．In hot zones.C．In temperate zones.D．Any climate.

A．Chinese is as difficult to learn as English.B．For women it may not be so difficult t

加班工资也应计入工资总额。()

A. when
B. before
C. since
D. until