船舶在旋回时，操舵速度越快：（）.
A.旋回直径越小
B.旋回初径越小
C.进距越小
D.横距越小
参考答案：C
I ______ the poor rabbit, but I didn't have the right drugs with me at that moment. [ ]
A. saved
B. had saved
C. could save
D. could have saved
近年来对志贺菌较为敏感的抗菌药物是（）
A.磺胺类药
B.庆大霉素
C.四环素类
D.氨苄西林
E.喹诺酮类
