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【单选题】
行为主义认为学习的决定因素是( )A.
外部刺激
B.
行为
C.
内部因素
D.
勤奋努力
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反馈参考答案：
举一反三
【单选题】下列有关现代科技的说法中，正确的是：
A.
高温超导体是指其超导临界温度在摄氏零度以上
B.
纳米材料是指结构单元的尺度达到纳米级而原有性能保持不变的材料
C.
杂交水稻是通过基因重组改变水稻的基因来提高产量的
D.
转基因食品是指转移动植物的基因并加以改变、制造出具备新特征的食品
【单选题】A doctor, together with two nurses,_____sent to the mountain village.
A.
have
B.
have been
C.
has
D.
has been
【简答题】适应的涵义
【单选题】It was the third time that she_____ to this mountain village to see the children. [ ]
A.
had come
B.
has come
C.
came
D.
would come
【单选题】Peking Man ______ in Zhoukoudian village, on the Longgu Mountain, Fangshan district, Beijing. [ ]
A.
has discovered
B.
was discovered
C.
is discovered
D.
will discover
【单选题】As no one in the small village knew nothing about Medicine, Mrs. Smith, a former nurse, had to work as a doctor.
A.
knew
B.
nothing
C.
had to
D.
as
【简答题】It was a village in India. The people were poor but they were happy. After all, their forefathers had lived in the same way for centuries. Then one day, some visitors from the city arrived. They told ...
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