This is a true story. Rex White knows too many seamen’s stories to want to add to them. It happened on land. It happened in Lytham, a town on the River Ribble, near to the place where the river into the Irish Sea. The shape of the trees along the Lytham beach road is proof of the great strength of the wind which comes in off the sea. It blows hard across the grass, the car-parks and the open road beside the river, and there is nothing to stop it. Rex White was a ship’s pilot. It was his job to guide ships up the river, between banks of sand, into the port of Presto. Mr. White lived in a village some kilometers from the coast, so he had to drive to Lytham and leave his car in one of the car-parks beside the river. Then he used to row out to the pilot boat, and await the particular ship that it was his duty to guide.
Early one morning, Mr. White returned to Lytham from a night on duty, to find that he could not start his car. He had driven from his village the e
A. the way the river flows into the Irish Sea
B. the fact that the open road is beside the river
C. looking at the shape of the trees
D. remembering that this is a true story
女，45岁，发现胆囊结石2年。2小时前突发上腹剧痛，伴寒战、发热。体检：右上腹压痛及肌紧张，Murphy征阳性。
对该患者首选的检查是（）我来回答:
