单项选择题

Why are subterranean buildings good for energy conservation

A．Because they use solar energy.
B．Because they don't need central heating.
C．Because the temperature there remains constant.
D．Because they don't need air-conditioning.

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热门试题

单项选择题

As a fireman, Roll Blum knows that ______.

A．fire can kill anyone very quickly.
B．fire does not kill easily.
C．fire always kills.
D．fire is impossible to fight.

单项选择题

What is good about NOMEX III is that ______.

A．it gives many people some extra time to live.
B．it is standard wear for many fire brigades.
C．it is light and fire-resistant.
D．it brings technology to life.