单项选择题

Passage Two
Questions 29 to 31 are bused on the passage you have just heard.

A．Protecting roads along the shore.
B．Building on beaches with seawalls.
C．Adding sand to beaches with seawalls.
D．Stopping building seawalls.

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Road politeness not only refers to the driver’s civilized manners, but also means the driver’s ability to ______ other drivers’ behavior.

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Multitasking, even if taken to the extreme, can give office workers a positive feeling, since frequent interruptions make them feel much needed and desired.

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