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【单选题】
评价观察过程的可控制性包括( )。A.
对其评价应包括观察调查法的整个过程
B.
对实施观察调查人员的培训，观察实际进行的环境
C.
观察是否具体、深入
D.
观察人员是否具有敏锐的观察力、良好的记忆力、判断能力和丰富的经验
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反馈参考答案：
举一反三
【简答题】激素间的相互作用有 、 、 、 。
【单选题】they visited the Science Museum, they showed great interest in everything they saw.
A.
The first time
B.
For the first time
C.
At first
D.
Until
【单选题】___ they visited our school, they showed great interest in everything they saw.
A.
The first time
B.
For the first time
C.
At first
D.
At the first time
【单选题】They showed great interest in everything they saw they visited the farm．
A.
for the first time
B.
at the first time
C.
at first
D.
the first time
【单选题】We contacted our customers and they showed great interest because there is a growing().
A.
supply
B.
demand
C.
desire
D.
want
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