删除：把多余的词用\划掉

修改：在错词下画一横线，在其下写上修改后的词

    My grandfather and I enjoy fishing.

    One Sunday morning we go fishing at a lake. We took ours fishing poles and headed for the lake.As soon as we arrived, so we dropped the lines into the water.Before waiting for about half an hour, I was beginning to get impatiently, I wanted to give up, and my grandfather told me to wait a little longer. Finally, there were a sudden pull at the pole and fish was caught. Within the next few minute, my grandfather also caught a fish.

    Felt hungry, we built a fire by the lake and barbecued the fish. It was delicious.

2010年上海世博会中国馆——“东方之冠”（如图）的主体结构是用国产Q460钢制成的．下列有关Q460钢的性质中，属于化学性质的是

世界经济全球化发展的一个重要表现是（    ）

计算：$\sqrt{4}+(\pi -2{)}^0-\left|-5\right|+(-1{)}^{2014}+(\frac{1}{3}{)}^{-2}$