在下列著作中，留下关于哈雷彗星的最早记录的是（）
A.《大衍历》
B.《甘石星经》
C.《授时历》
D.《春秋》
参考答案：D
高血压合并糖尿病，BP180/100mmHs，心率65次/分，尿蛋白(+)，血肌酐正常，选用下列哪类药物降压最合适
A．ACEI制剂
B．β-受体阻滞剂
C．钙离子拮抗剂
D．利尿剂
E．α-受体阻滞剂
93. The diligent student refused the help of others and insisted on working out the difficult maths problem _____.
A．on his own
B．in his own
C．of his own
D．for his own
