题目

The shocking disappearance of Malaysia Airlines Flight MH370 has captured the attention of millions around the world as the search for the airplane and its passengers and crew continues. What happened to the flight’s 239 passengers and crew after the plane left Kuala Lumpur on Saturday? It is becoming an increasingly desperate question as the days pass. But it’s hardly the first mystery of its kind. Here are some half-solved and unsolved airline mysteries that kept investigators clueless for years.  Air France Flight 447: An Airbus A330 flight from Rio de Janeiro to Paris dived 图为沿 106.5° E 的我国局部地形剖面图，读图回答问题．图中甲地形区是（ ）A．华北平原 B．四川盆地C．渭河平原 D．长江中下游平原