D．On behalf of

　　[解析]句意：我代表全体师生向你表示我们最热烈的欢迎。on behalf of 是固定短语，意为“代表……”。on account of 由于；on purpose 故意地；on business 出差。

　　[答案]D

　　.完形填空

　　(2011·重庆高考)My father brought home a sailboat when I was ten, and almost each Sunday in summers we would go sailing.Dad was quite skilled in sailing, but not good at __1__.As for me, I __2__ both before

　　twelve because of living close to Lake Ontario.

　　The last time Dad and I set sail together is really __3__.It was a perfect weekend after I graduated from university.I came home and __4__ Dad to go sailing.Out we set soon on the __5__lake.Dad hadn't sailed for years, but everything __6__well with the tiller (舵柄) in his hands.

　　When we were in the middle of the lake, a __7__ wind came all of a sudden.The boat was hit__8__.Dad was always at his best in any __9__， but at this moment he __10__.

　　“John! __11__！” he shouted in a trembling voice, with the tiller still in his hands.

　　In my memory he could fix any __12__.He was the one I always __13__ for strength and security.Before I could respond, a __14__of water got into the boat.I rushed to the tiller __15__ it was too late.Another huge wall of water __16__ the boat in a minute.We were thrown into the water, and Dad was struggling aimlessly.At that moment, I felt fiercely __17__ of him.

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