动脉血压升高可导致（）。
A.心房收缩期延长
B.心室舒张期延长
C.心室射血相延长
D.等容收缩期延长
E.心室收缩期延长
参考答案：D
Radar is used to not only to look（）,but also to measure their distances away from you.
A.at obscured objects
B.forward submerged targets
C.up exposed targets
D.for unseen objects
具有抗痛风作用的药物是( )。
A．别嘌醇
B．秋水仙碱
C．阿司匹林
D．吲哚美辛
E．丙磺舒
