Ⅰ.单句语法填空(高考真题改编)
1. (2019年全国卷Ⅰ)Of ________ nineteen recognized polar bear subpopulations, three are declining, six are stable, one is increasing, and nine lack enough data.
解析：此处特指确认的19个亚种群，故用定冠词the。
答案：the
2. (2019年浙江卷)Everybody wears________ same style of clothes.
解析：此处特指校服的款式相同，the same...意为“相同的……”。
答案：the
3. (2019年全国卷Ⅱ)When we got a call saying she was shortlisted, we thought it was________ joke.
解析：joke意为“笑话，玩笑”，是可数名词。空后用了单数joke，故填a。
答案：a
