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【单选题】
How much did you _____ all these things?A.
spend
B.
cost
C.
give
D.
pay for
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反馈参考答案：
举一反三
【简答题】设a={2，-3，1}，b={1，-2，3}，c={2，1，2}，向量r满足r⊥a，r⊥b，Prj c r=21，求r
【单选题】---What made him so angry? --- _______.
A.
Because his son escaped from school
B.
His son’s escaping from school
C.
His son escaped from school
D.
What his son escaped from school
【单选题】对于边沿触发的 D 触发器,下面( )是正确的。
A.
输出状态的改变发生在时钟脉冲的有效边沿
B.
任何时刻的输出状态都等于 D 输入 状态
C.
输出跟随每一个CP边沿的输入变化
D.
以上都对
【简答题】What worried the mother most was __________ the Internet after class in this school. A．her son’s not forbidding surfing B．her son’s not being forbidden to surf C．her son’s being not forbidden to surf ...
【单选题】How does wheelwright Bian convince the duke that what he is reading is nothing, but rubbish left by a dead man?
A.
He uses dialectical language to debate with the duke
B.
He explains to the duke by asking him to make a wheel himself
C.
He uses a fable story to teach the duke a lesson
D.
He uses his own experience of wheels to persuade the duke
【简答题】设全集U=R，集合M={x|3a-1＜x＜2a，a∈R}，N={x|-1＜x＜3}，若N C U M，求实数a的取值集合．
【单选题】根据我国合同法的规定，以下关于保管合同的叙述错误的是 （ ）
A.
保管合同原则上是实践合同
B.
保管人可以使用保管物，但不得许可他人使用保管物
C.
当事人没有约定或者约定不明确时，保管合同是无偿的
D.
在保管合同为有偿时，寄存人不支付保管费，保管人保管物享有留置权
【简答题】univer____ty (大学)
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