题目内容
（请给出正确答案）
The babies would "smile and bubble" at the lights because______.
A．the lights were directly related to some basic "drives"
B．the sight of the lights was interesting
C．they need not turn back to watch the lights
D．they succeeded in "switching on" the lights
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The babies would "smile and bubble" at the lights because ______.
A．the lights were directly related to some basic "drives"
B．the sight of the lights was interesting
C．they need not turn back to watch the lights
D．they succeeded in "switching on" the lights
The babies would “smile and bubble” at the lights because ________.
A) the lights were directly related to some basic “drives”
B) the sight of the lights was interesting
C) they need not turn back to watch the lights
D) they succeeded in “switching on” the lights
The babies Would "smile and bubble" at the lights because ______ .
A．they succeeded in "switching on" the light
B．the sight of the lights was interesting
C．they need not turn back to watch the lights
D．the lights were directly related to some basic" drives"
The babies would" smile and bubble" at the lights because ______.
A．the lights were directly related to some basic" drives"
B．the sight of the lights was interesting
C．they need not turn back to watch the lights
D．they succeeded in "switching on" the lights
The babies Would "smile and bubble" at the lights because ______.
A．they succeeded in "switching on" the light
B．the sight of the lights was interesting
C．they need not turn back to watch the lights
D．the lights were directly related to some basic "drives”
The best title for this passage would be ______.
A．Noise Making and Language Learning
B．A Huge Task for Children
C．How Babies Learn to Speak
D．Early Forms of Language
