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【单选题】
科研设计的基本要素不包括()。A.
确定研究对象
B.
确立研究问题
C.
确定研究类型
D.
确认研究变量
E.
确定测评指标
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举一反三
【单选题】What a____ it is for the two Johnson sisters to fall in love .with the two Hans brothers!
A.
distinction
B.
coincidence
C.
fashion
D.
relationship
【简答题】What will Mr. Johnson get if he places an order within the next ten days? Mr. Johnson will get ______ by mid-February.
【单选题】What can be concluded from the passage?
A.
Amy Johnson was the first pilot to fly to Australia all by herself.
B.
Amy Johnson's parents were rich and generous.
C.
Amy Johnson was the first woman who owned an airplane.
D.
Amy Johnson's dream came true.
【单选题】以下关于原子轨道的叙述正确的为( )。
A.
原子轨道是描述核外电子的运动状态
B.
原子轨道是电子运动的轨迹
C.
原子轨道是表示电子在空间各点出现的几率密度
D.
原子轨道是表示电子在空间各点出现的几率
【单选题】In what situation does Johnson commit a tort of negligence?
A.
Johnson leaves a campfire with a desire to burn down the forest.
B.
Johnson carelessly leaves a campfire burning, but it burns out.
C.
Johnson carelessly leaves a campfire burning, but it burns out, and then lightning causes a fire that burns down the forest.
D.
Johnson carelessly leaves a campfire burning, and the fire spreads to burn down the forest.
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