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【单选题】
下列说法正确的是
A.
对于正常沉积的岩层,老的在下,新的在上
B.
将某地区的地层按新老关系排列的剖面,叫该地区的普通剖面。用普通剖面对比某工点的地层,从而确定该工点地层新老关系的方法
C.
整合接触指的是,当沉积岩地层之间有明显的沉积间断,即沉积时间明显不连续,有一段时期没有沉积,缺失了该段时期的地层
D.
内力地质作用可使岩石圈的某部分(板块)发生缓慢的水平位移和垂直升降,使地壳发生分裂和碰撞,还可导致地震、火山作用、风化剥蚀及各种构造变动等
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举一反三
【单选题】已知全集U={1,2,3,4,5},集合A={3,4},B={2,3,5},那么集合A∪(C ∪ B)等于(  )
A.
{1,2,3,4,5}
B.
{3,4}
C.
{1,3,4}
D.
{2,3,4,5}
【简答题】as usual   B.difficult    C.well     D.properly     E.out of I had to make a big decision. Five years ago, I was working for a small engineering company. However, things were not going very well for...
【判断题】Collins 试剂是指 铬酸吡啶盐 ( )。
A.
正确
B.
错误
【判断题】Collins 试剂是指 氯铬酸吡啶鎓盐 ( )。
A.
正确
B.
错误
【单选题】已知全集U={1,2,3,4,5},A={1,3},B={3,5},则
A.
{1,2,4,5}
B.
{1,5}
C.
{2,4}
D.
{2,5}
【单选题】现实主义和自由主义都认为国家是理性的,两者
A.
没有区别
B.
有很小的不同
C.
一个指强制理性,一个指合作理性
D.
没有任何共同点
【判断题】Collins 试剂是指 铬酐吡啶配合物 ( )。
A.
正确
B.
错误
【单选题】He told us ________ sad and that it would be better for everyone.
A.
don't be
B.
doesn't be
C.
not be
D.
not to be
【简答题】Once my father and I went to see a circus(马戏 ). A family was standing in front of us for tickets. The family had eight children. Their clothes were not but they were clean. They were talking about the...
【单选题】He told us not ________ sad, and that it would be better for everyone to keep calm.
A.
be
B.
being
C.
to be
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