选出所给句子的答句，将其字母代号填在括号内。
①Is this your jacket?____ A. I'm ill.
②What's the time?____ B. All right.
③Shall we copy it now?____ C. No, it isn't.
④What's the matter?____ D. Four thirty
⑤My pencil is too short.____ E. You can have this long one.
从句式方面分析下面诗句的特点。
“昔闻洞庭水，今上岳阳楼。”
It's____ ____cold.
