阅完型填 People have been __1__ about caves since they lived in them centuri

阅完型填 People have been __1__ about caves since they lived in them centuri
People have been __1__ about caves
since they lived in them centuries ago.But we have only __2__ them seriously
for about 100 years.There are __3__ reasons to explore caves.Speleologists
can __4__ deposits of minerals or uncover evidence about the history of the
earth.But __5__ are just looking for adventure.
A pot-holder __6__ many risks.He may get stuck in a
narrow passage or get lost if his light __7__.But once the dangers are __8__,
visiting a cave is fairly safe.
Even in the cold and darkness underground,life __9__.
Cave creatures resemble those on the surface,__10__ they are often pale and
blind.Sunlight would kill them.
1.
A.
curious
B.
concerned
C.
interested
D.worried