题目
[2018·全国II]Diets have changed in China — and so too has its top crop. Since 2011,the country has grown more corn than rice. Corn production has jumped nearly 125 percent over ___62___ past 25 years, while rice has increased only 7 percent..
[2018·全国II]Diets have changed in China — and so too has its top crop. Since 2011,the country has grown more corn than rice. Corn production has jumped nearly 125 percent over ___62___ past 25 years, while rice has increased only 7 percent.
.题目解答
答案
[答案]the
.
解析
本题考查定冠词的用法。关键点在于理解固定短语搭配和时间表达的特指性。当“past”与具体时间(如“25 years”)连用时,通常需要使用定冠词“the”来特指某个特定时间段。此外,短语“over the past...”是常见表达,需熟记其结构。
关键步骤解析
-
识别短语结构
空格后的短语为“past 25 years”,其中“past”意为“过去的”,修饰“25 years”。此时,“past”作为可数名词,需与冠词连用。 -
判断冠词选择
当“past”与具体时间(如“25 years”)连用时,需用定冠词“the”表示特指,强调“过去25年”这一特定时间段。例如:“over the past decade”(过去十年间)。 -
排除其他选项
若填入“a”,则表示“一个过去的25年”,不符合语境中“特指”的含义。因此正确答案为“the”。