题目

阅读下面的短文，然后按照要求用英语写一篇150词左右的作文。The Elephant and the Fly An elephant was standing andpicking leaves from a tree. A small fly came，flying and buzzing near hisear. The elephant waved it away with his long ears. Then the fly came again,and the elephant waved it away once more. This was repeated severaltimes. Then the elephant asked the fly, Why are you so restless andnoisy? Why can't you stay for a while in one place? The fly answered, I am attracted to whatever I see, hear orsmell. My senses pull me constantly (不断地) in all directions a用容量瓶配制250mL某物质的量浓度溶液,该容量瓶必须是(  )A．干燥的B．瓶塞不漏水的C．用欲配制的溶液润洗过的D．容积为500mL的