单项选择题
At last，the palm trees that fringe the natural harbor of Port Aloahoa come into view on the horizon lit by the setting sun.The meaning of this sentence is that （）.
A.a vessel arrives at a port in a evening B.a vessel leaves a port in a evening C.a vessel arrives at a port in a morning D.a vessel leaves a port in a morning
单项选择题 As these features are not all charted，special caution should be exercised （） vessels navigating in the vicinity.
单项选择题 Areas enclosed by a long and short dashed magenta line indicate （）.
单项选择题 An occulting light is one in which （）.
