1C. Answer the questions1. Why are rip currents dangerous?2. How many surf life savers are there in Australia?3. How many flags do sur ife savers put up on the beach?4. When do Nippers meet?5. Where do Nippers meet?反馈 收藏 ...
根据第二段的 “One type of rip current, known as a channel rip current, forms when there are gaps between breaking waves.(一种类型的离岸流,被称为通道离岸流,当破碎波之间存在间隙时形成)”及“The darker corridor of the escaping water acts like a conveyor belt, moving water, unsuspecting ...