问题
选择题
Experts said it was that Malaysia Airlines Flight 370(马航370) had changed course and turned back toward Kuala Lumpur(吉隆坡).
A．obvious
B．extinct
C．successful
D．energetic
答案
答案：A
题目分析：A. obvious显然的，B. extinct灭绝的，绝种的，消逝的，破灭的，C. successful 成功的，D. energetic精力充沛的，句意：专家所很显然，马航370已经改变航线折返回吉隆坡。所以选A。