题干
He found himself _________ in a hospital bed.
A：lay
B：lie
C：lying
D：to lie
答案(点此获取答案解析）
C
A：lay
B：lie
C：lying
D：to lie
2PbSO4+2H2O）电解苦卤水 (含C1―、Br―、Na＋、Mg2＋)的装置如图所示 (a、b为石墨电极)。