糖尿病患者在并发肾损害时，高血压患病率高达70％，以下哪类降压药能有效减轻或延缓糖尿病肾病的进展（）

A.小剂量利尿剂

B.β受体阻滞剂

C.长效钙拮抗剂

D.ACEI

E.以上都不是

Two short blasts of the whistle have all of the following meanings except（）.

A.I intend to meet you starboard to starboard

B.I do not intend to hold course and speed

C.I intend to overtake you on your port side

D.I intend to alter my course to port