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阅读图文资料，回答下列问题。
材料一：墨脱县，地处喜马拉雅山脉南麓，雅鲁藏布大峡谷穿越全境，这里四季如春，雨量充沛。
2013年10月30日墨脱公路（墨脱至波密）正式通车，结束了墨脱不通公路的历史，修建该公路最艰巨的是打通海拔3700米的嘎隆拉雪山隧道，它穿越多条断裂带，施工中还出现大量涌水、渗水问题。
材料二：黑脱及其周边区域示意图（下图）。
分析2013年以前墨脱不通公路的自然原因。
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【单选题】Standing on the rim of the Grand Canyon(大峡谷), gazing across this giant would in the Earth's surface, a visitor might assume that the canyon had been caused by some ancient convulsing (震动)．In fact, the...
A.
patterns of erosion in different mountain ranges
B.
forces that made the Grand Canyon
C.
the increasing pollution of the Colorado River
D.
the sudden appearance of the Grand Canyon
【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
相关题目：
【单选题】Standing on the rim of the Grand Canyon(大峡谷), gazing across this giant would in the Earth's surface, a visitor might assume that the canyon had been caused by some ancient convulsing (震动)．In fact, the...
A.
patterns of erosion in different mountain ranges
B.
forces that made the Grand Canyon
C.
the increasing pollution of the Colorado River
D.
the sudden appearance of the Grand Canyon
【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
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