单项选择题

The experts believe ______.

A．they have ways to protect it from more damage
B．they can find ways to protect it if they know the cause
C．it will certainly fall down without the computer
D．the computer placed on it can protect it from further damage

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热门试题

单项选择题

The most famous statue---the Sphinx ______.

A．has fallen down
B．is made of limestone
C．has been well protected over 4,600 years
D．is in too poor a condition to be protected

单项选择题

Not until a large piece of stone fell from the Sphinx's right shoulder ______.

A．did the Sphinx begin to be damaged
B．did the experts take steps to protect it
C．did the polluted air begin to damage it
D．did the Sphinx begin to draw people's attention