题目内容

47.___

A. "Koo, Koo."
B. "Da-da."
C. "More milk!"
D. "Na-na."

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48.___

A. Between four and eight months.
Between one year and eighteen months.
C. Between two and three years.
D. Between three and four years.

49.___

A. They are the same in all languages.
B. They are often misinterpreted.
C. They are learned by imitation.
D. They are quite logical.

50.___

A. They are too complicated.
B. She doesn't have time to talk about them today.
C. The class didn't have a chance to read about them.
D. She doesn't agree with them.

44.___

As a drop of supercooled water.
B. As a snowflake.
C. As a particle of dust.
D. As a ball of ice.

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