将以下5个句子重新排列，语序正确的是（ ）。
①每隔几天就有爱好游泳的人来到河边，用自带的刷子把石阶上的青苔刷干净。
②往下则进入了花溪公园，河流变浅，只能戏水而无法畅游。
③河边有石头砌成的台阶，整齐厚实，一级一级慢慢延伸至水里。
④而平桥河段水深处有四五米，浅处也有近两米，刚刚好。
⑤去花溪游泳要在平桥附近，——往上游走是水库，不能游泳。

(单选题)The willow tree described in the passage protected itself by (单选题)It can be concluded from the passage that caterpillars do no (单选题)After the Englishman explained the idiom, ______. (单选题)Which of the following is TRUE according to the passage? (单选题)“…was shown is an amusing experience.” (The first paragraph) (单选题)At first on hearing “You don’t say,” I thought the foreigner (单选题)A year ago, I paid no attention to English idioms because __ (单选题)I think the chief thing that ______ me about Mr. Bush was hi (单选题)______in the arguments about the morality of artificially re (单选题)After living for years in a big city, they found it difficul