单项选择题
That half of the hurricane to the right hand side of its track (as you face the same direction that the storm is moving) in the Northern Hemisphere is called the（）.
A.windward side B.leeward side C.safe semicircle D.dangerous semicircle
单项选择题 Point Judith Harbor of Refuge（）.
单项选择题 One method of controlling rats on vessels is by rat-proofing. Rat-proofing is accomplished by （）.
单项选择题 Multi-year ice is the hardest sea ice and should be avoided if possible. It is recognizable because of what tone to its surface color? （）
