单项选择题

Questions 19 to 21 are based on the passage you have just heard.

A. It’s amazing that anyone could move so fast.
B. Televisions mark the beginning of modem life.
C. Modem life is changing very fast.
D. It’s hard to remember the past.

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单项选择题

A. Only when he has saved up enough money.B. Only when he has grown dissatisfied with his simple shelter.C. Only when he has satisfied his hunger.D. Only when he has learned to build houses.

A. Only when he has saved up enough money.
B. Only when he has grown dissatisfied with his simple shelter.
C. Only when he has satisfied his hunger.
D. Only when he has learned to build houses.

单项选择题

A. It has color. B. It has a moving image. C. It costs less money. D. It is not on the market.

A. It has color. B. It has a moving image.
C. It costs less money. D. It is not on the market.

Questions 19 to 21 are based on the passage you have just heard. 您的浏览器不支持 audio 元素。

Questions 19 to 21 are based on the passage you have just heard.