4.D　根据前文提到的“每天都设定目标,至少跑一英里半”可知D项“接下来再每天增加半英里”符合语境。

　　5.G　根据最后一句可知,根据自己要参加的比赛类型来制定自己的路程目标与时间,故选G项。

　　三、短文改错(满分10分)

　　Once I had to read a text-book which was so expensive for me to buy it.I couldn’t obtain it from the library and an only copy I could find was in a certain bookshop.So I will go along to the shop every afternoon and read a little of the book in a time.One day,therefore,I was disappointed to find the book missing from its usually place.He was about to leave when the owner of the shop waved at me.Expecting to be told off,I went towards him.To my surprise,the owner pointed to the book which placed in a corner.“I put it there in case anyone should buy it.” He said kindly,left me to continue my reading.

　　1.第1句:so→too。固定句型“too+adj.+for sb.+to do...”表示“对于某人来说太……而不能做……”。

　　2.第1句:删除it。which引导定语从句,作buy的宾语,it在此是多余的。

　　3.第2句:an→the。the only copy意为“唯一的一册”。

　　4.第3句:will→would。根据开头的once可知本文是叙述过去发生的事情。

　　5.第3句:in→at。at a time意为“一次,每次”。

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