单项选择题

Which of the following may lead to family quarrels according to the passage（）

A．Nawareness of energy cycles.
B．Familiar monologues.
C．A change in a family member's energy cycle.
D．Attempts to control the energy cycle of other family members.

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热门试题

单项选择题According to the author, in which decade of the nineteenth century did a steamship first attempt to compete with the transatlantic packets（）

A．The twenties.
B．The thirties.
C．The forties.
D．The fifties.

单项选择题The elapsed time of the fastest transatlantic crossing mentioned by the author was 13 days and （）

A．11.5 hours
B．7.5 hours
C．7 hours
D．4.5 hours