1．(2020·全国卷Ⅲ)One day the emperor wanted to get his portrait(画像)done so he called all great artists to come and present their ________(fine)work，so that he could choose the best.
解析： 考查形容词最高级。根据句意可知，皇帝命令所有知名画家献上他们最好的作品。
答案： finest
2．(2020·全国卷Ⅰ)The far side of the moon is of particular interest to scientists because it has a lot of deep craters(环形山)，more so ________ the familiar near side.
解析： 考查连词。本句中含有more，空格后为比较对象，因此本空应填than。
答案： than
3．(2020·浙江卷1月)The first is declining birth rates，which means old generations are large compared to younger generations，and so，on average，the population becomes ________(old)than before.
解析： 考查形容词比较级。结合句意及下文的than before可知，这里意为“比以前更加年老”，故填older。
答案： older
