肘髎
参考答案：
肘，肱与前臂之间的关节部分。髎，亦作窌，窟也，深空之貌，是邻近骨部的缝隙。泛指穴为肘部之深孔。
He sat there_________, with his head on his hand. [ ]
A. and think
B. thinking
C. thought
D. being thought
下列哪项发明标志着工业革命的开始[ ]
A．珍妮机
B．飞梭
C．改良蒸汽机
D．火车
