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【单选题】
人类首次徒步穿越世界最大峡谷—雅鲁藏布大峡谷是在（）？
A.
1998年10月17日
B.
1998年10月18日
C.
1998年10月19日
D.
1999年10月19日
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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【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