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【多选题】
大洋裂谷岩浆直接来自上地幔，主要为()岩浆
A.
基性岩浆
B.
超基性岩浆
C.
中性岩浆
D.
酸性岩浆
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举一反三
【单选题】Earthquakes An earthquake is one of the most terrifying phenomena that nature can dish up. We generally think of the ground we stand on as "rock-solid" and completely stable. An earthquake can shatter...
A.
More than 3 million.
B.
1.5 million.
C.
About 8,000.
D.
11.
【单选题】大洋板块俯冲到大陆板块之下，这里往往形成( ) ① 海沟 ②褶皱山脉 ③裂谷 ④岛孤和海岸山脉
A.
①③
B.
②④
C.
③④
D.
①
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【单选题】Earthquakes An earthquake is one of the most terrifying phenomena that nature can dish up. We generally think of the ground we stand on as "rock-solid" and completely stable. An earthquake can shatter...
A.
More than 3 million.
B.
1.5 million.
C.
About 8,000.
D.
11.
【单选题】大洋板块俯冲到大陆板块之下，这里往往形成( ) ① 海沟 ②褶皱山脉 ③裂谷 ④岛孤和海岸山脉
A.
①③
B.
②④
C.
③④
D.
①
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