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【单选题】
无论婴儿是否有正常的听力,他们发出的咕咕声听起来都是相同的,这表明咕咕声( )A.
在向成人听众传达自发的意思
B.
随着大脑和发声器官的成熟而发展
C.
父母修正和扩展的反映
D.
源于婴儿的互相排斥限制
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皮皮学刷刷变学霸
举一反三
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A.
create by putting components or members together
B.
collect in one place
C.
get people together
D.
put something into a machine
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【简答题】A．object B．basic C．C D．assemble
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【单选题】--- Mom says I need to ____________ every day to be healthy. --- She is right. Doing sports is good for us.
A.
write
B.
thank
C.
exercise
D.
speak
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