单选题 He was wet to the skin, his whole body was ______ and trembling.

【正确答案】 A
【答案解析】stiff僵硬的；拘谨的；艰难的；straight笔直的；steady稳健的；hard坚固的；困难的；冷酷无情的，烈性的。句意：他全身湿透了，浑身僵硬，还在发抖。