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【多选题】
图 a为南京周边某火山口浮石图,浮石内有孔隙,入水不沉,图b为岩石圈物质循环示意图,图中甲、乙、丙、丁代表三大类岩石。据此回答 11 ~ 12 题。 图 a 图 b 11. 下列关于 “浮石”的说法,正确的有( )
A.
能在其中找到动植物化石
B.
属于图b中甲类岩石
C.
孔隙形成源于外力侵蚀
D.
便于雕琢，适宜制作盆景
参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】The Exploding Lakes of Cameroon What comes to mind when youthink of a lake? You probably imagine a pretty scene with bue water, brds, and fish. FOr the people in the northwestern Cameroon, however,the...
A.
Water will flow down the hills.
B.
Poisonous gases will bereleased suddenly.
C.
A strong wind will rise from the lakes.
D.
The volcanoes will come to life.
【单选题】The Exploding Lakes of Cameroon What comes to mind when you think of a lake You probably imagine a pretty scene with blue water, birds, and fish. For the people in the northwestern Cameroon, however,...
A.
the gases rise to the top and mix with air.
B.
people from the villages turn over the water.
C.
scientists have put in a computer system.
D.
they have more gases trapped at the bottom than other crater lakes.
【单选题】下列有关岩石圈物质循环的叙述，正确的是（）
A.
通过岩石圈的物质循环，形成了丰富的矿产资源
B.
岩石圈的物质循环，不能改变地表形态
C.
岩石圈的物质循环，只进行物质交换不进行能量传输
D.
变质岩不能转化成沉积岩
【单选题】胃窦部有一圆形溃疡，直径2cm，溃疡较浅，边缘不整齐，外形火山口状。其诊断最可能为（）.
A.
急性胃溃疡
B.
胃溃疡病
C.
应激性溃疡
D.
早期凹陷型胃癌
E.
溃疡型胃癌