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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【多选题】夜入瞿塘峡中注释真确的有（）
A.
瞿塘峡为长江三峡之一
B.
双屏合：两岸的崖壁是似两扇合拢的屏风
C.
拔捻：指的是亲肤拉着竹子搅成的缆索
D.
瞿塘峡全长8米
E.
欲识：想要知识
【单选题】The Grand Canyon Standing on the rim of the Grand Canyon(大峡谷), gazing across this giant wound in the Earth’’s surface, a visitor might assume that the canyon had been caused by some ancient convulsion...
A.
its shapes are constantly changing
B.
it contains approximately 14 million tons of rock
C.
its eruptions have increased in recent years
D.
it is being eroded by toxic waste and pollutants
【单选题】The Grand Canyon Standing on the rim of the Grand Canyon(大峡谷), gazing across this giant wound in the Earth’’s surface, a visitor might assume that the canyon had been caused by some ancient convulsion...
A.
Astronomy
B.
Botany(植物学)
C.
Geology
D.
Chemistry
【单选题】The Grand Canyon Standing on the rim of the Grand Canyon(大峡谷), gazing across this giant wound in the Earth’’s surface, a visitor might assume that the canyon had been caused by some ancient convulsion...
A.
it was caused by some ancient convulsion
B.
its presence is an embarrassment to the state of Colorado
C.
it looks like an injury on the Earth’s surface
D.
it has caused many visitors to injure themselves