7．a　bite 作名词意为“一口”时是可数名词，且此处泛指“咬了一口”，故此处应用不定冠词 a。

　　8．and　因为本句中的“smiled”，“started”和“could not stop”是三个并列的谓语动词，它们之间是顺承关系，所以此处应用and。

　　9．mine　根据语境可知，作者的儿子想吃作者盘子里的菜，所以此处所填词应是指代作者盘子里的菜，故应用名词性物主代词，即mine。

　　10．presented　句子主语“the same meal”和present 之间是动宾关系，空格前已有was，所以此处只需填present的过去分词形式，即presented。

　　Ⅱ.短文改错

　　(2016·银川一中第一次模拟)With the development of peoples living condition, more and more people possess their own cars. Some of us think it is good to own a car. For instance, it’s convenient, fast and comfortable means of transportation. Moreover, it shows that people are becoming richer and the country is much more stronger. It also made relative businesses and industries develop faster.

　　However, others have different opinions, thinking that cars give up waste gases and pollute the environment around. Too much cars will have some bad effects, such as more accidents and crowdedness. Besides, lack parking lots is another big problem.

　　As far as I’m concerned, we ought to think careful before buying cars. As if we have cars, we may use it less.

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