嘉靖二十九年，鞑靼部俺答汗率兵绕过大同，直下通州，进逼北京，大肆抄略，史称( )。
A．河阴之变
B．南坡之变
C．庚子之变
D．庚戌之变
参考答案：D
男性，30岁。上腹部剧痛5天，疑为胰腺炎，虽经治疗症状无明显好转。下列哪项实验室检查对判断胰腺炎的预后最有价值（）。
A.血清淀粉酶
B.尿淀粉酶
C.血清脂肪酶
D.血清钙
E.淀粉酶、肌酐清除率比值
Tom was at a loss as to how a car worked, so it was ______ that he knew nothing about how to repair cars.
A．apparent
B．absurd
C．confused
D．complicated
