“地形崎岖，无山不洞，无洞不奇。”描绘的是[ ]
A．云贵高原
B．黄土高原
C．青藏高原
D．内蒙古高原
答案：A
--- Try this yellow shirt.
-- -____ . How about the red one?
-- -That's OK.
A．But I don't like the size
B．I like it very much
C．But I don't like the color
D．I'll take it
造成冒险行为的内在原因是什么？
