Ⅰ.单句语法填空
1．(2019·全国卷Ⅰ)It is difficult to figure out a global population of polar bears as much of the range has been poorly (poor) studied.
解析：此处修饰过去分词studied，因此应用副词形式，故答案为poorly。
2．(2019·全国卷Ⅱ)Her years of hard work have finally (final )been acknowledged after a customer nominated (提名) her to be Cheshire's Woman Of The Year.
解析：本空修饰动词have been acknowledged，故应用副词finally。
3．(2019·全国卷Ⅱ)“...We are so proud of her. It's wonderful (wonder)．”
解析：根据句子结构可知，本空在系动词is后作表语，故应用形容词wonderful。
4．(2019·全国卷Ⅲ)They also shared with us many traditional (tradition) stories about Hawaii that were hugely (huge) popular with tourists.
解析：形容词修饰名词，根据空格后的stories可知，空1处应填形容词形式，故填traditional。副词修饰形容词，根据空格后的popular可知，空2处应填副词形式，故填hugely。
5．(2018·全国卷Ⅱ)This switch has decreased pollution (pollute) in the country's major lakes and reservoirs and made drinking water safer for people.
解析：decrease“降低，减少”，为及物动词，后接名词作宾语，故填名词pollution。
6．(2018·浙江卷)Researchers have found that there is a direct link between the increase in food eaten outside the home and the rise in weight(weigh) problems.
解析：根据语境可知，此处表示体重方面的问题，故此处填名词作定语。
