单项选择题 In many areas “atoll” clouds (clouds of vertical development) are produced over small islands. These are the result of（）.

单项选择题 In good weather，you should deploy the sea anchor from the liferaft to（）.

单项选择题 If you are sailing from the East Coast of the United States to the Caribbean Sea，which publication would contain information on weather，currents，and storms?（）