哪项是佝偻病时骨样组织堆积的表现
A．肋缘外翻
B．O形腿
C．手镯征
D．颅骨用手压有乒乓球的感觉
E．肋膈沟
参考答案：C
His actions could lead to him ______ his job.
A．lose
B．losing
C．to lose
D．being lost
飞机载手电筒仅限紧急情况下使用，不得作其它照明使用。
